Sessions

Immerse yourself in over 200 in-depth sessions to help you continue to create the most innovative apps in the world.

Watching session videos


Videos and transcripts will be posted each day. Watch during the week or any time after on the web or in the Apple Developer app on iPhone, iPad, Mac, and Apple TV.

You can search transcripts by keyword, see all instances where the keyword is mentioned in the video, go straight to the time it was mentioned, and even share a link to that specific time. The Apple Developer app also lets you watch videos at multiple playback speeds and easily copy code directly from the video.

Subtitles and transcripts will be available in English as videos are posted, with additional languages added later this summer.

Monday
  • Keynote

    iOS, macOS, tvOS, watchOS

    The Apple Worldwide Developers Conference kicks off with exciting reveals, inspiration, and new opportunities. Join the worldwide developer community for an in-depth look at the future of Apple platforms, directly from Apple Park.

    Watch

  • Keynote (ASL)

    iOS, macOS, tvOS, watchOS

    The Apple Worldwide Developers Conference kicks off with exciting reveals, inspiration, and new opportunities. Join the worldwide developer community for an in-depth look at the future of Apple platforms, directly from Apple Park. This version includes American Sign Language (ASL) interpretation.

    Watch

  • Monday@WWDC21

    Trying to make sense of all the exciting announcements, new technologies, and Fall previews at WWDC this year? Let's break it down for you. Check out a recap of everything that happened on Day 1 of WWDC — and get a sneak peek at all the great stuff coming tomorrow.

    Watch

  • Platforms State of the Union

    iOS, macOS, tvOS, watchOS

    Take a deeper dive into the new tools, technologies, and advances across Apple platforms that will help you create even better apps.

    Watch

  • Platforms State of the Union (ASL)

    iOS, macOS, tvOS, watchOS

    Take a deeper dive into the new tools, technologies, and advances across Apple platforms that will help you create even better apps. This version includes American Sign Language (ASL) interpretation.

    Watch

Tuesday
  • Add intelligence to your widgets

    iOS, macOS

    Discover how to you can add intelligence to your widgets in Smart Stacks. We'll show you how to use the new Widget Suggestions API in tandem with Smart Rotate to create more valuable widget experiences for people throughout the day. Whether you inform the system of new, timely information or teach the system to learn common patterns, adopting these APIs can help people discover your widget and allows you to influence how the system surfaces content from your app around system spaces.

    Watch

  • Add rich graphics to your SwiftUI app

    iOS, macOS, tvOS, watchOS

    Learn how you can bring your graphics to life with SwiftUI. We'll begin by working with safe areas, including the keyboard safe area, and learn how to design beautiful, edge-to-edge graphics that won't underlap the on-screen keyboard. We'll also explore the materials and vibrancy you can use in SwiftUI to create easily customizable backgrounds and controls, and go over graphics APIs like drawingGroup and the all new canvas. With these tools, it's simpler than ever to design fully interactive and interruptible animations and graphics in SwiftUI.

    Watch

  • Apple’s privacy pillars in focus

    iOS

    At Apple, we believe that privacy is a fundamental human right. Learn about our four pillars of privacy, how we brought these principles together to design iCloud Private Relay, and how you can approach building privacy in your app in line with those fundamentals. Explore how you can build data minimization, on-device processing, transparency and control, and security protections right into your app.

    Watch

  • Bring accessibility to charts in your app

    iOS, macOS, tvOS, watchOS

    Charts are an essential tool for understanding data, and critical to understanding ourselves, our health, our finances, and our world. Find out how you can make charts accessible in your apps to people with vision impairments through audio graphs and sonified data. And we'll show you how to improve your charts for accessibility through universal design principles and system accessibility settings.

    Watch

  • Connect Bluetooth devices to Apple Watch

    watchOS

    Discover how you can integrate data from Bluetooth accessories into Apple Watch apps and complications. Bluetooth devices can provide medical data, sports stats, and more to Apple Watch, and help people get more out of your software in the process. We'll show you how to connect to these devices during Background App Refresh to display the most up-to-date information in your Apple Watch complications, provide an overview of Core Bluetooth on watchOS, and explore best practices for Bluetooth accessory design.

    Watch

  • Craft search experiences in SwiftUI

    iOS, macOS, tvOS, watchOS

    Discover how you can help people quickly find specific content within your apps. Learn how to use SwiftUI's .searchable modifier in conjunction with other views to best incorporate search for your app. And we'll show you how to elevate your implementation by providing search suggestions to help people understand the types of searches they can perform.

    Watch

  • Create 3D models with Object Capture

    iOS, macOS

    Object Capture provides a quick and easy way to create lifelike 3D models of real-world objects using just a few images. Learn how you can get started and bring your assets to life with Photogrammetry for macOS. And discover best practices with object selection and image capture to help you achieve the highest-quality results.

    Watch

  • Create custom audio experiences with ShazamKit

    iOS, macOS, tvOS, watchOS

    Bring custom audio matching to your app with ShazamKit. Discover how you can use Shazam's exact audio matching to recognize audio against any source when you use custom catalogs on device. Download our starter project and code along with the presenter as we guide you through the process of matching audio against a custom catalog. We'll also explore how easy it is to connect content across devices by building an interactive iOS app that can synchronize perfectly with video being streamed from a TV. To learn more about ShazamKit, check out "Explore ShazamKit" from WWDC21.

    Watch

  • Discover built-in sound classification in SoundAnalysis

    iOS, macOS, tvOS, watchOS

    Explore how you can use the Sound Analysis framework in your app to detect and classify discrete sounds from any audio source — including live sounds from a microphone or from a video or audio file — and identify precisely in a moment where that sound occurs. Learn how the built-in sound classifier makes it easy for you to identify over 300 different types of sounds without the need for a custom trained model. This includes a variety of noises, ranging from human sounds, musical instruments, animals, and various items. For custom models, see how you can leverage the Audio Feature Print feature extractor to create smaller models with variable sound window control to better serve your app's purposes. For more about Sound Classification and the Sound Analysis framework, watch “Training Sound Classification Models in Create ML” from WWDC19.

    Watch

  • Dive into RealityKit 2

    iOS, macOS

    Creating engaging AR experiences has never been easier with RealityKit 2. Explore the latest enhancements to the RealityKit framework and take a deep dive into this underwater sample project. We'll take you through the improved Entity Component System, streamlined animation pipeline, and the plug-and-play character controller with enhancements to face mesh and audio.

    Watch

  • Enhance your app with Metal ray tracing

    iOS, macOS

    Achieve photorealistic 3D scenes in your apps and games through ray tracing, a core part of the Metal graphics framework and Shading Language. We'll explore the latest improvements in implementing ray tracing and take you through upgrades to the production rendering process. Discover Metal APIs to help you create more detailed scenes, integrate natively-supported content with motion, and more.

    Watch

  • Explore HLS variants in AVFoundation

    iOS, macOS, tvOS, watchOS

    Discover how you can use AVFoundation APIs to highlight different variants of your content within your app. We'll show you how you can inspect HLS content using these APIs for different video characteristics, including attributes like SDR/HDR, FPS, and the like. And we'll explore the AVAssetVariant, which represents streaming and offline content.

    Watch

  • Explore Nearby Interaction with third-party accessories

    iOS, macOS, tvOS, watchOS

    Discover how your app can interact with Ultra Wideband (UWB) third-party accessories when running on a U1-equipped device. We'll show you how to use the Nearby Interaction framework's standards-based technology to implement precise and directionally-aware experiences with accessories. Learn about resources for getting started with accessory and app development such as development kits, sample code, and specification documents, along with supported technology providers. To find out more about Nearby Interaction, check out the framework documentation linked as part of this session. And if you're an accessory manufacturer or considering becoming one, be sure to check out the Nearby Interaction accessory specification documents and Getting Started resources.

    Watch

  • Explore ShazamKit

    iOS, macOS, tvOS, watchOS

    Take advantage of Shazam's exact audio matching capabilities within your app when you use ShazamKit. Learn how you can harness the immense Shazam catalog to create all sorts of experiences, including quickly recognizing the exact song playing in the background of a video captured by your app, offering dynamic visual effects based on the music playing in a room, or even syncing with external audio to provide companion app experiences. We'll also show you how you can build custom catalogs within ShazamKit to match with any audio source — all on device. For a deeper dive, check out “Create custom audio experiences with ShazamKit,” where you'll code along with us and learn how to build an education app that synchronizes perfectly with streamed video content.

    Watch

  • Explore Verifiable Health Records

    iOS

    Find out how you can securely request access to someone's verifiable health records and incorporate that data safely into your app. The Health app helps people download, view, and share their health records, including their COVID-19 immunization and test results — and iOS 15 brings support for the SMART Health Card, a verifiable health record that incorporates the FHIR health data standard. We'll show you how your app can go about requesting access to this record and how you can verify the signature of the file using CryptoKit and the issuer's public key.

    Watch

  • Explore Xcode Cloud workflows

    iOS, macOS, tvOS, watchOS

    Learn how Xcode Cloud workflows can help you and your team automate building, analyzing, testing, archiving, and distributing your apps and frameworks. They are flexible, extensible, and can be configured around your team's development and distribution process. Find out the basics of Xcode Cloud Workflows, discover how to configure them from end to end, and check out recommended workflows to get you started with Apple's continuous integration system. To get the most out of this session, we recommend first watching “Meet Xcode Cloud” from WWDC21.

    Watch

  • Explore bindless rendering in Metal

    iOS, macOS, tvOS

    Unleash the full potential of your shaders and implement modern rendering techniques by adding Argument Buffers to adopt bindless rendering. Learn how to make your entire scene and resources available to the GPU to make the most out of raytracing and rasterization pipelines.

    Watch

  • Explore hybrid rendering with Metal ray tracing

    iOS, macOS

    Discover how you can combine ray tracing with your rasterization engine to implement simplified graphics techniques and elevate visuals in your app or game. We'll explore how you can use natural algorithms to accurately simulate the interplays of light, and learn how to take advantage of the latest tools in Xcode to capture, inspect, and debug your ray-traced scenes.

    Watch

  • Explore structured concurrency in Swift

    iOS, macOS, tvOS, watchOS

    When you have code that needs to run at the same time as other code, it's important to choose the right tool for the job. We'll take you through the different kinds of concurrent tasks you can create in Swift, show you how to create groups of tasks, and find out how to cancel tasks in progress. We'll also provide guidance on when you may want to use unstructured tasks. To get the most out of this session, we first recommend watching “Meet async/await in Swift.”

    Watch

  • Faster and simpler notarization for Mac apps

    macOS

    Notarization works in tandem with macOS to help people safely download software for their Mac outside of the App Store. Discover how notarytool can help you quickly and easily notarize your Mac app for distribution. We'll show you how you can now notarize your apps with just a single command, and how to bring notarization into your continuous integration workflows. To learn about the notarization workflow, watch the 2019 video "All About Notarization."

    Watch

  • Focus on iPad keyboard navigation

    iOS

    Improve the keyboard experience in your iPad and Mac Catalyst app. Discover how you can accelerate access to key features with the hardware keyboard, and navigate through your views and view controllers. Learn how to customize which elements are keyboard navigable, as well as how to customize the tab loop.

    Watch

  • Get ready for iCloud Private Relay

    iOS, macOS, tvOS, watchOS

    iCloud Private Relay is an iCloud+ service that prevents networks and servers from monitoring a person's activity across the internet. Discover how your app can participate in this transition to a more secure and private internet: We'll show you how to prepare your apps, servers, and networks to work with iCloud Private Relay.

    Watch

  • Host and automate your DocC documentation

    iOS, macOS, tvOS, watchOS

    Find out how you can easily host your Swift package and framework DocC documentation online. We'll take you through configuring your web server to host your generated DocC archives, and help you learn to use the xcodebuild tool to automate documentation generation and keep your web content synchronized and up to date.

    Watch

  • Immerse your app in spatial audio

    iOS, macOS, tvOS

    Discover how spatial audio can help you provide a theater-like experience for media in your apps and on the web. We'll show you how you can easily bring immersive audio to those listening with compatible hardware, and how to automatically deliver different listening experiences depending on someone's bandwidth or connection — all with little to no change to your code. And gain recommendations on how you can tailor the experience in your app and use spatial audio to tell stories in new, exciting ways.

    Watch

  • Meet DocC documentation in Xcode

    iOS, macOS, tvOS, watchOS

    Discover how you can use DocC to build and share documentation for Swift packages and frameworks. We'll show you how to begin generating documentation from your own code — or from third-party code you depend upon — and write and format it using Markdown. And we'll also take you through the export process, helping you generate DocC archives to share with the public.

    Watch

  • Meet Group Activities

    iOS, macOS, tvOS

    Learn more about the framework powering SharePlay, and discover the different types of shared experiences you can implement for people who use your app. Explore a high-level overview of the framework's architecture and concepts, including how Group Activities and AVFoundation work in tandem, and learn how to implement it into your app. This is a great starting point to know more about SharePlay and how to integrate Group Activities in your apps.

    Watch

  • Meet MusicKit for Swift

    iOS, macOS, tvOS, watchOS

    MusicKit makes it easy to integrate Apple Music into your app. Explore the Swift-based framework: We'll take you through the basic process of using MusicKit — including how to find, request, and play content — and show you how you can incorporate music subscription workflows into your app if someone hasn't yet signed up to Apple Music.

    Watch

  • Meet Safari Web Extensions on iOS

    iOS, macOS

    Safari Web Extensions use HTML, CSS, and JavaScript to offer people powerful browser customizations — and you can now create them for every device that supports Safari. Learn how to build a Safari Web Extension that works for all devices, and discover how you can convert an existing extension to Safari through Xcode and the Safari Web Extension Converter.

    Watch

  • Meet Shortcuts for macOS

    iOS, macOS

    Shortcuts is coming to macOS, and your apps are a key part of that process. Discover how you can elevate the capabilities of your app by exposing those features as Shortcuts actions. We'll show you how to build actions for your macOS apps built with Catalyst or AppKit, deploy actions across platforms, publish and share shortcuts, and enable your app to run shortcuts from other apps. We'll also take you through how Shortcuts fits in with existing Mac automation technologies like Automator and AppleScript.

    Watch

  • Meet StoreKit 2

    iOS, macOS, tvOS, watchOS

    StoreKit 2 delivers powerful, Swift-native APIs for in-app purchases and auto-renewable subscriptions. Learn how you can easily implement in-app purchases and subscriptions, and discover APIs for retrieving product information, handling transactions, determining product entitlements and customer status, as well as comprehensive testing support in Xcode.

    Watch

  • Meet TestFlight on Mac

    iOS, macOS, tvOS

    TestFlight has come to Mac. Learn how you can manage builds and testers, collect feedback, and deploy your macOS app. Discover enhancements for internal testing and new features that integrate with Xcode Cloud to make testing even easier on all platforms.

    Watch

  • Meet Xcode Cloud

    iOS, macOS, tvOS, watchOS

    Get to know Xcode Cloud, Apple's continuous integration and continuous delivery (CI/CD) service for building apps and frameworks for all Apple platforms. Find out how Xcode Cloud can improve both the productivity of your team and the quality of your products. We'll show you how to start your first build, use a build report to fix issues, and collaborate with your team.

    Watch

  • Meet async/await in Swift

    iOS, macOS, tvOS, watchOS

    Swift now supports asynchronous functions — a pattern commonly known as async/await. Discover how the new syntax can make your code easier to read and understand. Learn what happens when a function suspends, and find out how to adapt existing completion handlers to asynchronous functions.

    Watch

  • Meet declarative device management

    iOS, macOS

    The future of device management is here: Learn how you can support mobile device management while allowing individual devices to be autonomous and proactive, bringing both increased performance and scalability. We'll show you how you can incorporate this declarative model in your MDM solution.

    Watch

  • Meet in-app events on the App Store

    iOS, macOS, tvOS

    Discover how you can promote timely events happening in your apps and games — like a game competition, a movie premiere, and more — directly on the App Store. We'll show you how in-app events now appear on the App Store and how to create, schedule, and manage them in App Store Connect.

    Watch

  • Meet the Screen Time API

    iOS

    Explore the Screen Time API and learn how you can build apps that support customized parental controls — all while putting privacy first. Learn how you can use key features like core restrictions and device activity monitoring to create safe, secure experiences in your app while providing measurable control for parents and guardians.

    Watch

  • Meet the UIKit button system

    iOS, macOS, tvOS, watchOS

    Every app uses Buttons. With iOS 15, you can adopt updated styles to create gorgeous buttons that fit effortlessly into your interface. We'll explore features that make it easier to create different types of buttons, learn how to provide richer interactions, and discover how you can get great buttons when using Mac Catalyst.

    Watch

  • Out of this world... on to Mars

    Fascinated by aerospace engineering and fighter jets from the age of 11, MIT graduate Tiera Fletcher followed her passion. At 22, she landed her dream job working on NASA's Space Launch System, the most powerful rocket created in history. Learn what it's like to design components of a 322-foot-tall, 8.8-million-pounds-of-thrust-producing rocket intended to journey humans into deep space — including the moon, Mars, and beyond.

    Watch

  • Protect mutable state with Swift actors

    iOS, macOS, tvOS, watchOS

    Data races occur when two separate threads concurrently access the same mutable state. They are trivial to construct, but are notoriously hard to debug. Discover how you can stop these data races in their tracks with Swift actors, which help synchronize access to data in your code. Discover how actors work and how to share values between them. Learn about how actor isolation affects protocol conformances. And finally, meet the main actor, a new way of ensuring that your code always runs on the main thread when needed. To get the most out of this session, we recommend first watching “Meet async/await in Swift.”

    Watch

  • Simplify sign in for your tvOS apps

    tvOS

    Find out how people can use Face ID or Touch ID on their iOS or iPadOS device to authorize purchases and sign into your tvOS app. Discover how you can simplify sign in for people using your app and help them get to the content they want to enjoy, faster. We'll show you how to set up a simplified sign in process and share some best practices about creating great sign in experiences for Apple TV. To get the most out of this session, we recommend a basic understanding of associated domains and the Authentication Services framework.

    Watch

  • Take your iPad apps to the next level

    iOS

    Make even better iPad apps: Learn how you can adopt prominent scenes for uninterrupted, focused interactions. Help people stay engaged and fast with keyboard shortcuts and the keyboard shortcut interface. Explore how the latest in pointer enhancements can help your app boost productivity.

    Watch

  • Tap into virtual and physical game controllers

    iOS, macOS, tvOS

    It's time to up your input game: Learn about the latest improvements to virtual and physical game controllers for iPhone, iPad, Mac, and Apple TV. Meet the virtual on-screen controller, which turns touch input into game controller input, and find out how to add controller sharing features to your app. We'll also show you how to support adaptive trigger technology found in DualSense controllers, provide best practices for controller support, and take you through some common pre-flight checks around accessible and customizable input before submitting to the App Store. For more information on saving highlight clips from a game controller, check out “Discover rolling clips in ReplayKit” from WWDC21.

    Watch

  • The practice of inclusive design

    iOS, macOS, tvOS, watchOS

    An inclusive app or game is not only usable by different people, but also welcomes people from diverse backgrounds and perspectives. Discover how you can design inclusive content for your interface, language, imagery, and marketing materials and support the broadest possible range of people with your app or game.

    Watch

  • The process of inclusive design

    iOS, macOS, tvOS, watchOS

    Discover how you can deliver inclusive apps that can foster amazing experiences for everyone who uses your software. We'll take you through best practices for creating and empowering diverse teams and explore how inclusivity influences every stage of the design and development process.

    Watch

  • Transition media gaplessly with HLS

    iOS, macOS, tvOS

    Discover how you can create streaming media content that seamlessly transitions between episodes, songs, scenes, and individual resources. With gapless HLS playback, you can stitch together multiple pieces of content on the fly to create customized workouts, design interactive content, tell compelling stories, and more. We'll show you how you can provide faithful continuity for streaming music, event recordings, and pre-recorded video and provide a captivating viewing experience within your app.

    Watch

  • Tuesday@WWDC21

    The day's almost over, but there's still so much to explore: Catch up on the best of Day 2 at WWDC and check out a few of the great sessions and activities still to come.

    Watch

  • Ultimate application performance survival guide

    iOS, macOS

    Performance optimization can seem like a daunting task — with many metrics to track and tools to use. Fear not: Our survival guide to app performance is here to help you understand tooling, metrics, and paradigms that can help smooth your development process and contribute to a great experience for people using your app.

    Watch

  • Use the camera for keyboard input in your app

    iOS

    Learn how you can support Live Text and intelligently pull information from the camera to fill out forms and text fields in your app. We'll show you how to apply content filtering to capture the correct information when someone uses the camera as keyboard input and apply it to a relevant UITextField, helping your app input data like phone numbers, addresses, and flight information. And we'll explore how you can create a custom interface, extend other controls like UIImageViews to support this capability, and more. For more on supporting Autofill in your app, we recommend watching “Autofill everywhere” from WWDC20 and “The Keys to a Better Text Input Experience” from WWDC17.

    Watch

  • What's new in AVKit

    iOS, macOS

    Learn about enhancements to Picture in Picture and full screen improvements on macOS. Explore the new content source API, and learn how AVPictureInPictureController supports AVSampleBufferDisplayLayer, as well as recommended steps for an app to provide a seamless full screen experience on macOS or in a Mac Catalyst app.

    Watch

  • What's new in App Clips

    iOS

    Discover how App Clips can elevate quick and focused experiences for specific tasks, the moment your customer needs them. We'll take you through some of the latest improvements to App Clips, including launching an experience directly from an app, testing your App Clip locally, and creating App Clip Codes to make it easy to access your experience in the real world. We'll also share some great examples of App Clips from our developer community that provide innovative ways to interact with people and beautiful designs. To get the most of this session, we recommend first watching “Explore App Clips” and “Configure and link your App Clips” from WWDC20.

    Watch

  • What's new in AppKit

    macOS

    Explore the latest advancements in Mac app development with AppKit. We'll show how you can enhance your app's design with new control features and SF Symbols 3, build powerful text experiences using TextKit 2, and harness the latest Swift features in your app.

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  • What's new in CloudKit

    iOS, macOS, tvOS, watchOS

    CloudKit provides a secure, convenient, and reliable cloud database for your apps — and it's only getting better. Discover how you can unravel your threads with support for async/await and convenience API additions. We'll also show you how to encourage collaboration between people using your app through sharing entire record zones of data, and explore how to adopt CloudKit features like encrypted values and help protect sensitive data within your app. To get the most out of this session, we recommend being familiar with CloudKit and its operations on containers, as well as a basic understanding of record and data types.

    Watch

  • What's new in Foundation

    iOS, macOS, tvOS, watchOS

    Discover how the latest updates to Foundation can help you improve your app's localization and internationalization support. Find out about the new AttributedString, designed specifically for Swift, and learn how you can use Markdown to apply style to your localized strings. Explore the grammar agreement engine, which automatically fixes up localized strings so they match grammatical gender and pluralization. And we'll take you through improvements to date and number formatting that simplify complex requirements while also improving performance.

    Watch

  • What's new in SwiftUI

    iOS, macOS, tvOS, watchOS

    There's never been a better time to develop your apps with SwiftUI. Discover the latest updates to the UI framework — including lists, buttons, and text fields — and learn how these features can help you more fully adopt SwiftUI in your app. Find out how to create beautiful, visually-rich graphics using the canvas view, materials, and enhancements to symbols. Explore multi-column tables on macOS, refinements to focus and keyboard interaction, and the multi-platform search API. And we'll show you how to take advantage of features like Swift concurrency, a brand new AttributedString, format styles, localization, and so much more.

    Watch

  • What's new in UIKit

    iOS

    Discover the latest updates and improvements to UIKit and learn how to build better iPadOS, iOS, and Mac Catalyst apps. We'll take you through UI refinements, productivity updates, and API enhancements, and help you explore performance improvements and security & privacy features.

    Watch

  • What's new in watchOS 8

    watchOS

    watchOS 8 brings all-new opportunities to keep people up to date on their watch face. With new APIs for the Always-On Retina display and updating complications from Bluetooth devices and background delivery of HealthKit data, it's never been easier to keep your app up to date. Learn about region-based user notifications to leverage location in your app. Explore all the new enhancements to SwiftUI and watchOS that will get you excited to build your next Watch app.

    Watch

  • What‘s new in Swift

    iOS, macOS, tvOS, watchOS

    Join us for an update on Swift. Discover the latest language advancements that make your code easier to read and write. Explore the growing number of APIs available as Swift packages. And we'll introduce you to Swift's async/await syntax, structured concurrency, and actors.

    Watch

  • What’s new in Game Center: Widgets, friends, and multiplayer improvements

    iOS, macOS, tvOS

    Power up your online gaming experience with GameKit and adopt features like multiplayer, leaderboards, and achievements in your game. We'll take you through the latest improvements to Game Center, including player matching and multiplayer APIs, and explore how you can boost discovery of your game.

    Watch

  • What’s new in managing Apple devices

    iOS, macOS

    Discover the latest advancements in key device management capabilities for your organization or MDM solution. Explore the refreshed device management Settings on iOS and iPadOS, an all-new return to service functionality for macOS, and other updates to device management across Apple platforms.

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  • Your guide to keyboard layout

    iOS

    Discover how you can use the Keyboard Layout Guide to manage how keyboards work within your iOS or iPadOS app. Learn how you can avoid writing lengthy code blocks when you use UIKeyboardLayoutGuide and UITrackingLayoutGuide to integrate the keyboard into your interface, helping people have a smoother, more enjoyable experience whenever they use the on-screen keyboard within your app. To get the most out of this session, we recommend familiarity with both Auto Layout and UILayoutGuide.

    Watch

Wednesday
  • AR Quick Look, meet Object Capture

    iOS, macOS

    Discover simple ways to bring your Object Capture assets to AR Quick Look while optimizing for visual quality and file size. Explore ways you can integrate AR Quick Look and Object Capture to help create entirely new experiences. To get the most out of this session, we recommend first watching “Advances in AR Quick Look” from WWDC19. You can also learn how to integrate Apple Pay and custom actions with AR on the web through “Shop online with AR Quick Look” from WWDC20.

    Watch

  • Accessibility by design: An Apple Watch for everyone

    watchOS

    Discover how Apple creates products that work well for everyone. Learn from a few of the engineers and designers who helped build Apple Watch as they share stories that highlight our approach to accessible design, constant iteration, and community engagement.

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  • Adopt Quick Note

    iOS, macOS

    Learn how you can link your app to Quick Note and help people quickly connect your content to their notes — and their notes to your content. Discover how Quick Note recognizes and links to app content through NSUserActivity, and find out how you can adopt this API in your app. We'll take you through the requirements, benefits, and features of supporting Quick Note. We'll also provide guidance and best practices for NSUserActivity to help your app get all of its benefits.

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  • Analyze HTTP traffic in Instruments

    iOS, macOS, tvOS, watchOS

    Learn to use the Instruments Network template to record and analyze your app's HTTP traffic. We'll show you how to explore and visualize the behavior of sessions, tasks, and individual HTTP requests to ensure data is transmitted efficiently and respects people's privacy.

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  • Build a workout app for Apple Watch

    watchOS

    Build a workout app from scratch using SwiftUI and HealthKit during this code along. Learn how to support the Always On state using timelines to update workout metrics. Follow best design practices for workout apps.

    Watch

  • Build dynamic iOS apps with the Create ML framework

    iOS

    Discover how your app can train Core ML models fully on device with the Create ML framework, enabling adaptive and customized app experiences, all while preserving data privacy. We'll explore the types of models that can be created on-the-fly for image-based tasks like Style Transfer and Image Classification, audio tasks like custom Sound Classification, or tasks that build on a rich set of Text Classification, Tabular Data Classification, and Tabular Regressors. And we'll take you through the many opportunities these models offer to make your app more personal and dynamic. For even more inspiration, check out “Classify hand poses and actions with Create ML” and “Discover built-in sound classification in SoundAnalysis” from WWDC21.

    Watch

  • Build interfaces with style

    iOS, macOS

    Discover how you can iterate upon your interfaces even more quickly when building your apps. Learn how you can modernize your UI with the latest button styles and table view cell content configurations, both of which give you greater control directly inside of Interface Builder. We'll show you how you can preview common customizations with accessibility overrides — such as dynamic type size and increased contrast — all without leaving the canvas. We'll also take you through hierarchical symbols to easily add a splash of color to reinvigorate your app. Whether you're just starting out or have been developing apps for years, learn best practices for creating great interfaces with tips and tricks sprinkled along the way.

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  • Build light and fast App Clips

    iOS

    App Clips give people the power to discover and download a small part of your app at a moment's notice to complete tasks and transactions. Explore tips and best practices to help you create compact App Clips that emphasize modern features and elegant design. Learn how you can build reliable and secure App Clips to ensure that people can always access your experience when scanning a physical App Clip Code or viewing it through your website. And we'll take you through specific strategies for testing an App Clip before releasing it to the world.

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  • Capture and process ProRAW images

    iOS, macOS

    When you support ProRAW in your app, you can help photographers easily capture and edit images by combining standard RAW information with Apple's advanced computational photography techniques. We'll take you through an overview of the format, including the look and feel of ProRAW images, quality metrics, and compatibility with your app. From there, we'll explore how you can incorporate ProRAW into your app at every stage of the production pipeline, including capturing imagery with AVFoundation, storage using PhotoKit, and editing with Core Image.

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  • Classify hand poses and actions with Create ML

    iOS, macOS

    With Create ML, your app's ability to understand the expressiveness of the human hand has never been easier. Discover how you can build off the support for Hand Pose Detection in Vision and train custom Hand Pose and Hand Action classifiers using the Create ML app and framework. Learn how simple it is to collect data, train a model, and integrate it with Vision, Camera, and ARKit to create a fun, entertaining app experience. To learn more about Create ML and related concepts around model training, check out “Build an Action Classifier with Create ML” from WWDC20. And don't miss “Build dynamic iOS apps with the Create ML framework” to learn how your models can be trained on-the-fly and on device from within your app.

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  • Coordinate media experiences with Group Activities

    iOS, macOS, tvOS

    Discover how you can help people watch or listen to content all in sync with SharePlay and the Group Activities framework. We'll show you how to adapt a media app into a synchronized, SharePlay-enabled experience for multiple people. Learn how to add Group Activities to your app, explore the Picture in Picture layout, and find out how the playback coordinator object can help you fine-tune playback across multiple devices.

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  • Create accessible experiences for watchOS

    watchOS

    Discover how you can build a top-notch accessibility experience for watchOS when you support features like larger text sizes, VoiceOver, and AssistiveTouch. We'll take you through adding visual and motor accessibility support to a SwiftUI app built for watchOS, including best practices around API integration, experience, and more.

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  • Create audio drivers with DriverKit

    macOS

    Discover how to use the AudioDriverKit API to consolidate your Audio Server plug-in and DriverKit extension into a single package. Learn how you can simplify audio driver installation with an app instead of an installer package and distribute your driver through the Mac App Store. And we'll take you through how the Core Audio HAL interacts with AudioDriverKit and discover best practices for audio device drivers.

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  • Create custom symbols

    iOS, macOS, tvOS, watchOS

    Discover how you can create custom iconography with the latest rendering modes in SF Symbols 3. We'll help you learn how to draw, edit, and annotate symbols, as well as explore more advanced techniques to improve the design process. For a primer on working with custom symbol templates, we recommend first watching “Introducing SF Symbols” from WWDC19.

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  • Customize and resize sheets in UIKit

    macOS

    Discover how you can create a layered and customized sheet experience in UIKit. We'll explore how you can build a non-modal experience in your app to allow interaction with content both in a sheet and behind the sheet at the same time. We'll also take you through sheet size customization, revealing or hiding grabber controls, and adapting between popovers and customized sheets in your app. To get the most out of this session, we recommend watching the Presentations portion of “Modernizing Your UI for iOS 13” from WWDC19 beginning at 9:45.

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  • Customize your advanced Xcode Cloud workflows

    iOS, macOS, tvOS, watchOS

    Xcode Cloud integrates with Apple Developer tools and services, all major source control management services, and even social collaboration tools like Slack. If your development process relies on additional tools and external services, however, you can fine-tune your workflows and the behavior of your build. Learn how you can pass information to your build using environment variables and run additional commands inside your actions using custom build scripts. Find out how to add additional repositories where you and your team might share work. And discover how you can integrate Xcode Cloud with external services using webhooks. To get the most out of this session, we recommend first watching “Meet Xcode Cloud” and “Explore Xcode Cloud workflows” from WWDC21.

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  • Demystify SwiftUI

    iOS, macOS, tvOS, watchOS

    Peek behind the curtain into the core tenets of SwiftUI philosophy: Identity, Lifetime, and Dependencies. Find out about common patterns, learn the principles that drive the framework, and discover how you can use them to guarantee correctness and performance for your app.

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  • Design great actions for Shortcuts, Siri, and Suggestions

    iOS, macOS, watchOS

    Actions are the building blocks of shortcuts. They allow people to take advantage of your app's functionality even when they're not looking at your app's interface. We'll show you how to design actions that are useful, easy-to-use, and can be incorporated into powerful multi-step shortcuts. You'll also explore enhancements around publishing and sharing shortcuts, ensuring that people can access your app in the way they want across all of Apple's platforms.

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  • Detect people, faces, and poses using Vision

    iOS, macOS

    Discover the latest updates to the Vision framework to help your apps detect people, faces, and poses. Meet the Person Segmentation API, which helps your app separate people in images from their surroundings, and explore the latest contiguous metrics for tracking pitch, yaw, and the roll of the human head. And learn how these capabilities can be combined with other APIs like Core Image to deliver anything from simple virtual backgrounds to rich offline compositing in an image-editing app. To get the most out of this session, we recommend watching “Detect Body and Hand Pose with Vision” from WWDC20 and “Understanding Images in Vision Framework” from WWDC19. To learn even more about people analysis, see “Detect Body and Hand Pose with Vision” from WWDC20 and “Understanding Images in Vision Framework” from WWDC19.

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  • Diagnose Power and Performance regressions in your app

    iOS, macOS

    Quickly discover how to identify priorities when viewing power and performance regressions. Learn how to track metrics that have regressed with device-and percentile-specific information, so you can focus your efforts on optimization and save valuable development time. We'll also show you how to track down common anti-patterns in your app that wear out device storage, help you customize your workflows, and add App Store Connect APIs to help you stay up to date on your app's real-world performance.

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  • Discover Metal debugging, profiling, and asset creation tools

    iOS, macOS, tvOS

    Explore how Xcode can help you take your Metal debugging, profiling and asset creation workflows to the next level. Discover the latest tools for ray tracing and GPU profiling, and learn about Metal Debugger workflows. We'll also show you how to use the Texture Converter tool, which supports all modern GPU texture formats and can easily integrate into your multi-platform asset creation pipelines.

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  • Discover account-driven User Enrollment

    iOS, macOS

    Learn how User Enrollment helps you support “bring your own device” deployments in your business or enterprise environment. We'll explore data separation, enhancements to Managed Apple IDs and how you can use the new account-based onboarding in your organization.

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  • Discover concurrency in SwiftUI

    iOS, macOS, tvOS, watchOS

    Discover how you can use Swift's concurrency features to build even better SwiftUI apps. We'll show you how concurrent workflows interact with your ObservableObjects, and explore how you can use them directly in your SwiftUI views and models. Find out how to use await to make your app run smoothly on the SwiftUI runloop, and learn how to fetch remote images quickly with the AsyncImage API. And we'll take you through the process of enabling additional asynchronous flows in your custom views.

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  • Discover geometry-aware audio with the Physical Audio Spatialization Engine (PHASE)

    iOS, macOS

    Explore how geometry-aware audio can help you build complex, interactive, and immersive audio scenes for your apps and games. Meet PHASE, Apple's spatial audio API, and learn how the Physical Audio Spatialization Engine (PHASE) keeps the sound aligned with your experience at all times — helping you create spatial soundscapes and scenes during the development process, rather than waiting until post production. We'll take you through an overview of the API and its classes, including Sources, Listeners, Acoustic Geometry, and Materials, and introduce the concept of Spatial Modeling. We'll also show you how to quickly combine PHASE's basic building blocks to start building an integrated audio experience for your app or game.

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  • Discoverable design

    iOS, macOS, tvOS, watchOS

    Discover how you can create interactive, memorable experiences to onboard people into your app. We'll take you through discoverable design practices and learn how you can craft explorable, fun interfaces that help people grasp the possibilities of your app at a glance. We'll also show you how to apply this methodology to personalize your content and make your app easy to customize.

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  • Elevate your DocC documentation in Xcode

    iOS, macOS, tvOS, watchOS

    Great documentation can help people effectively and easily adopt your Swift framework. Discover how you can create rich, conceptual articles to accompany your API. You'll learn best practices for writing articles, including how to structure your documentation, and find out how to create automatically managed links that connect your docs together.

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  • Evaluate videos with the Advanced Video Quality Tool

    iOS, macOS, tvOS

    Learn how the Advanced Video Quality Tool (AVQT) can help you accurately assess the perceptual quality of your compressed video files. Utilizing the AVFoundation framework, AVQT supports a wide range of video formats, codecs, resolutions and frame-rates in both the SDR and HDR domains, which results in easy and efficient workflows — for example, no requirement to decode to a raw pixel format. AVQT uses Metal to achieve high processing speeds by offloading heavy pixel-level computation to the GPU, typically analyzing videos in excess of real-time video frame rates. With incredible ease of use and computational efficiency, AVQT can help you eliminate low-quality videos from your video catalog before they might otherwise reach people in your app.

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  • Explore Core Image kernel improvements

    iOS, macOS

    Discover how you can add Core Image kernels written in the Metal Shading Language into your app. We'll explore how you can use Xcode rules and naming conventions for Core Image kernels written in the Metal Shading Language, and help you make sense of Metal's Stitchable functions and dynamic library features to benefit Core Image kernels.

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  • Explore Safari Web Extension improvements

    iOS, macOS

    Learn how you can extend Safari's functionality with Safari Web Extensions. We'll introduce you to the latest WebExtension APIs, explore non-persistent background page support — a particularly relevant topic if you're developing for iOS — and discover how you can use the Declarative Net Request WebExtensions API to block content on the web. Finally, we'll show you how to customize tabs in Safari 15.

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  • Explore UWB-based car keys

    iOS, watchOS

    Discover how to create digital car keys that support Ultra Wideband (UWB), allowing people to unlock and start their car while leaving iPhone in their bag or pocket or Apple Watch on their wrist. We'll show you how to integrate UWB, add proximity actions and distance unlock features, and help people personalize their vehicle settings by identifying which key someone uses on the driver-side door. To get the most out of this session, we recommend watching the session “Introducing Car Keys” from WWDC20, which details the basics of pairing, key management, and server actions.

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  • Explore WKWebView additions

    iOS, macOS

    Explore the latest updates to WKWebView. We'll show you how to use APIs to manipulate web content without JavaScript, explore delegates that can help with WebRTC and Downloads, and share how you can easily create a richer web experience within your app.

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  • Explore advanced rendering with RealityKit 2

    iOS, macOS

    Create stunning visuals for your augmented reality experiences with cutting-edge rendering advancements in RealityKit. Learn the art of writing custom shaders, draw real-time dynamic meshes, and explore creative post-processing effects to help you stylize your AR scene.

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  • Explore dynamic pre-rolls and mid-rolls in HLS

    iOS, macOS, tvOS

    Learn how you can create seamless transitions between advertisements and your HLS streams. We'll show you how to incorporate HLS tags and AVFoundation APIs to create media experiences that move easily between your primary content and mid-rolls, and provide best practices for playing these streams in your app.

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  • Explore low-latency video encoding with VideoToolbox

    iOS, macOS

    Supporting low latency encoders has become an important aspect of video application development process. Discover how VideoToolbox supports low-delay H.264 hardware encoding to minimize end-to-end latency and achieve new levels of performance for optimal real-time communication and high-quality video playback.

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  • Explore the SF Symbols 3 app

    iOS, macOS, tvOS, watchOS

    Tour the latest updates to the SF Symbols app — our interactive library for iconography. Learn how you can use the library to design accessible and inclusive apps that look incredible: We'll take you through changes to the app and symbols search, explore previewing and custom symbol management, and help you integrate symbols into your interface designs. It's recommended you watch "What's new in SF Symbols" from WWDC21 before watching this video.

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  • Explore the catalog with the Apple Music API

    iOS

    Discover how you can use the Apple Music API to fetch music catalog metadata for your app. Explore the latest updates to the API as well as some advanced techniques for shaping your requests and highlighting the right metadata for a project. To get the most out of this session, we recommend some familiarity with the Apple Music API.

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  • Get ready to optimize your App Store product page

    iOS

    Discover new ways to make your product page more relevant. Learn how you can use custom product pages to highlight different features and content in your app for different users. Explore how you can optimize your product page by comparing the effectiveness of different visual assets to see what users like most. We'll cover what you need to know, the assets to prepare, and how to get ready to create the most effective product page for your app.

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  • Improve global streaming availability with HLS Content Steering

    iOS, macOS, tvOS

    Discover how you can use HLS playlist tags and the Steering Manifest format with your content to help dynamically update CDN redundancy policies tuned for each viewer. Learn how to load balance, set failover, and more.

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  • Make blazing fast lists and collection views

    macOS

    Build consistently smooth scrolling list and collection views: Explore the lifecycle of a cell and learn how to apply that knowledge to eliminate rough scrolling and missed frames. We'll also show you how to improve your overall scrolling experience and avoid costly hitches, with optimized image loading and automatic cell prefetching. To get the most out of this video, we recommend a basic familiarity with diffable data sources and compositional layout.

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  • Manage devices with Apple Configurator

    iOS, macOS

    Apple Configurator is now more capable than ever. Whether you're provisioning iOS, iPadOS, and tvOS devices in your organization or servicing existing macOS devices, learn how Apple Configurator can help with key workflows. And, coming to iPhone in iOS 15, discover how you can bring Automated Device Enrollment to even more macOS devices.

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  • Manage in-app purchases on your server

    iOS, macOS, tvOS, watchOS

    Discover the latest updates to managing in-app purchases on your server. Explore how you can use servers to track status changes, handle refunds, and manage subscriber status. Learn about App Store server APIs around status and in-app purchase transactions, and find out how App Store server notifications can help you track more customer lifecycle events. We'll also take you through managing Family Sharing for in-app purchases, and the latest improvements to testing in-app purchases in the sandbox environment.

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  • Measure health with motion

    iOS, watchOS

    Discover how you can take your app's health monitoring to the next level with motion data. Meet Walking Steadiness for iPhone and the six-minute-walk metric for Apple Watch: Walking Steadiness can help your app interpret someone's quality of walking and risk of falling, while the six-minute-walk metric — along with the HealthKit estimate recalibration API — can track changes to walking endurance following acute events like surgery. We'll show you how you can support these metrics and help provide actionable health data to people who use your app, helping improve patient care and clinical trials, especially as more services must be delivered remotely.

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  • Meet AsyncSequence

    iOS, macOS, tvOS, watchOS

    Iterating over a sequence of values over time is now as easy as writing a “for” loop. Find out how the new AsyncSequence protocol enables a natural, simple syntax for iterating over anything from notifications to bytes being streamed from a server. We'll also show you how to adapt existing code to provide asynchronous sequences of your own. To get the most out of this session, we recommend first watching “Meet async/await in Swift.”

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  • Meet TextKit 2

    iOS, macOS

    Meet TextKit 2: Apple's next-generation text engine, redesigned for improved correctness, safety, and performance. Discover how TextKit 2 can help you provide a better text experience for international audiences, create more diverse layouts by mixing text content with visual content, and ensure smooth scrolling performance. We'll introduce the latest APIs, dive into some practical examples, and provide guidance for modernizing your apps.

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  • Meet the Location Button

    iOS, macOS, tvOS, watchOS

    Meet CLLocationButton: a secure interface element that provides an easy, low-friction way to grant your app location access only when and where it is needed. Learn how you can add CLLocationButton to new or existing code, how to customize it within interface legibility guidelines, how to recognize and address customization failures, and how it interacts with iOS's traditional prompt-based Location Services authorization. To get the most out of this session, we recommend basic familiarity with the Core Location API.

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  • Meet the Swift Algorithms and Collections packages

    iOS, macOS, tvOS, watchOS

    Discover two of the latest additions to the list of open-source Swift packages from Apple: Swift Algorithms and Swift Collections. Not only can you use these packages immediately, they also incubate new algorithms and data structures for eventual inclusion in the Swift Standard Library. We'll show you how you can integrate these packages into your projects and select the right algorithms and data structures to make your code clearer and faster.

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  • Move beyond passwords

    iOS, macOS

    Despite their prevalence, passwords inherently come with challenges that make them poorly suited to securing someone's online accounts. Learn more about the challenges passwords pose to modern security and how to move beyond them. Explore the next frontier in account security with secure-by-design, public-key-based credentials that use the Web Authentication standard. Discover in this technology preview how Apple is approaching this standard in iOS 15 and macOS Monterey.

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  • Qualities of a great Mac Catalyst app

    macOS

    Discover best practices, tools, and techniques to help craft the best possible Mac Catalyst app. We'll take you through key considerations when you bring your iPad app to macOS, explore detailed code examples for refining your interface and experience, and show you how to distribute your Mac app to everyone. To get the most out of this session, we recommend a basic familiarity with Mac Catalyst. Watch “What's new in Mac Catalyst” from WWDC21 to get an overview of the latest features for bringing your iPad app to Mac. And for more on improving your macOS experience, watch “Optimize the interface of your Mac Catalyst app” from WWDC20.

    Watch

  • Qualities of great iPad and iPhone apps on Macs with M1

    iOS, macOS

    It's easier than ever to offer your existing iPad and iPhone apps on Macs with M1. We'll show you how to bring your app to macOS, and explore how the system automatically bridges various features of your app to work on the Mac. We'll also provide guidance on best practices in your iPad app, combined with improvements in macOS Monterey — like Apple Pay support, improved AV handling, and shortcuts — to provide the fullest experience on Macs with M1.

    Watch

  • Review code and collaborate in Xcode

    iOS, macOS, tvOS, watchOS

    Explore the latest enhancements to code review and pull requests in Xcode. Learn more about diff display preferences, commit selectors, changes navigator, and pull request workflows. We'll show you how you can collaborate with your team and find regressions by connecting your code review and PR workflows directly to your source code.

    Watch

  • SF Symbols in SwiftUI

    iOS, macOS, tvOS, watchOS

    Discover how you can incorporate SF Symbols into your SwiftUI app. We'll explore basic techniques for presenting symbols, customizing their size, and showing different variants. We'll also take you through the latest updates to symbol colorization and help you pick the right tool for your app's needs.

    Watch

  • SF Symbols in UIKit and AppKit

    iOS, macOS, tvOS

    Learn how you can create colorized symbols with SF Symbols 3 and customize them to match the visual design of your app's interface. We'll take you through the latest UIKit and AppKit APIs for integrating colorized symbols, as well as best practices for implementation. To get the most out of this session, we recommend watching “Introducing SF Symbols” from WWDC19.

    Watch

  • Secure login with iCloud Keychain verification codes

    iOS, macOS

    Learn how you can support on-device verification codes in your app or website for a more secure sign-in experience. We'll explore the latest updates to the iCloud Keychain password manager and discover how verification codes, AutoFill, iCloud Keychain sync, and two-tap setup simplify the multi-step sign-in process. We'll show you how to support this process in your apps and websites.

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  • Send communication and Time Sensitive notifications

    iOS, macOS, watchOS

    Learn more about the evolution of notifications on Apple platforms. We'll explore how you can help people manage notifications within your app, including how you can craft meaningful moments with interruption levels and Time Sensitive notifications. And we'll introduce you to communication notifications, providing a richer experience for calls and messages in your app through SiriKit. To get the most out of this session, we recommend having experience creating local and remote notifications, as well as some familiarity with SiriKit intents.

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  • Showcase app data in Spotlight

    iOS, macOS

    Discover how Core Data can surface data from your app in Spotlight with as little as two lines of code. Learn how to make that data discoverable in Spotlight search and to customize how it is presented to people on device. Lastly, we'll show you how to implement full-text search within your app, driven completely with the data indexed by Spotlight.

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  • Swift concurrency: Update a sample app

    iOS, macOS, tvOS, watchOS

    Discover Swift concurrency in action: Follow along as we update an existing sample app. Get real-world experience with async/await, actors, and continuations. We'll also explore techniques for migrating existing code to Swift concurrency over time. To get the most out of this code-along, we recommend first watching “Meet async/await in Swift” and “Protect mutable state with Swift actors” from WWDC21. Note: To create an async task in Xcode 13 beta 3 and later, use the Task initializer instead.

    Watch

  • SwiftUI Accessibility: Beyond the basics

    iOS, macOS, tvOS, watchOS

    Go beyond the basics to deliver an exceptional accessibility experience. Learn how to use the new SwiftUI Previews in Xcode to explore the latest accessibility APIs and create fantastic, accessible apps for everyone. Find out how you can customize the automatic accessibility built into SwiftUI to make your own custom controls accessible. Explore best practices and identify where to improve your app's navigation experience using grouping and focus. And help supercharge navigation for VoiceOver users with the addition of rotors.

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  • Symbolication: Beyond the basics

    iOS, macOS, tvOS, watchOS

    Discover how you can achieve maximum performance and insightful debugging with your app. Symbolication is at the center of tools such as Instruments and LLDB to help bridge the layers between your application's runtime and your source code. Learn how this process works and the steps you can take to gain the most insight into your app.

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  • Triage TestFlight crashes in Xcode Organizer

    iOS, macOS, tvOS, watchOS

    Learn how Xcode Organizer makes it easier and faster to triage and fix crashes. We'll explore how you can get access to crash information and feedback from your TestFlight testers just moments after they occur. And we'll show you how to analyze crashes, view metrics, and even share crash information among your team. For a primer on crash logs, we recommend watching “Understanding Crashes and Crash Logs” from WWDC18.

    Watch

  • Use async/await with URLSession

    iOS, macOS, tvOS, watchOS

    Discover how you can adopt Swift concurrency in URLSession using async/await and AsyncSequence, and how you can apply Swift concurrency concepts to improve your networking code.

    Watch

  • Wednesday@WWDC21

    Well hello, Wednesday! Time to catch up on Day 3 at WWDC and find out what's coming to a Thursday near you.

    Watch

  • What's new in Mac Catalyst

    macOS

    Discover the latest updates to Mac Catalyst and find out how you can make your app feel even more at home on macOS. Learn about a variety of new and enhanced UIKit APIs that let you customize your Mac Catalyst app to take advantage of behaviors unique to macOS. To get the most out of this session, we recommend a basic familiarity with Mac Catalyst. Check out “Introducing iPad Apps for Mac” from WWDC19 to acquaint yourself. For more on refining your Mac Catalyst app, watch “Optimize the interface of your Mac Catalyst app” from WWDC20.

    Watch

  • What's new in Wallet and Apple Pay

    iOS, macOS, tvOS, watchOS

    Discover the redesigned Apple Pay for in-app and web payments and learn how you can incorporate the latest APIs into your app or website. Learn how to add features to your app like coupon codes, improved shipping information, and improvements to the payment detail display screen. And explore changes to Wallet passes, including auto-expiry and multi-pass support for the web.

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  • What’s new in SF Symbols

    iOS, macOS, tvOS, watchOS

    Explore the latest updates to SF Symbols, Apple's iconography library. Designed to integrate seamlessly with San Francisco — the system font for Apple platforms — SF Symbols can help you create beautiful and consistent iconography for your app while supporting accessibility features like Dynamic Type and Bold Text. Discover the latest additions to the SF Symbols library, localization enhancements, and how you can more easily customize the color of a symbol to integrate it within your app's own color palette. We'll also show you how you can design and annotate custom symbols to support Monochrome, Hierarchical, Palette, and Multicolor rendering modes. To get the most out of this session, we recommend first watching “SF Symbols 2” from WWDC20.

    Watch

  • What’s new in camera capture

    iOS, macOS

    Learn how you can interact with Video Effects in Control Center including Center Stage, Portrait mode, and Mic modes. We'll show you how to detect when these features have been enabled for your app and explore ways to adopt custom interfaces to make them controllable from within your app. Discover how to enable 10-bit HDR video capture and take advantage of minimum-focus-distance reporting for improved camera capture experiences. Explore support for IOSurface compression and delivering optimal performance in camera capture. To learn more about camera capture, we also recommend watching "Capture high-quality photos using video formats" from WWDC21.

    Watch

Thursday
  • Add support for Matter in your smart home app

    iOS

    The enhanced and new APIs in HomeKit enable smart home developers to integrate with the new Matter protocol in the most convenient way. Tour the Matter protocol, and discover how to set up and manage Matter accessories on our platforms and within your smart home apps.

    Watch

  • Automate CloudKit tests with cktool and declarative schema

    iOS, macOS, tvOS, watchOS

    It's never been easier to test your CloudKit containers. We'll introduce you to cktool, a command-line utility that makes quick work of CloudKit configuration, and learn about the new schema language that allows you to rapidly prototype and evolve containers. We'll also show you how to combine these tools and configure your containers before running tests in Xcode. To get the most out of this session, we recommend being familiar with CloudKit and its development and production environments, as well as a basic understanding of record and data types.

    Watch

  • Bring Core Data concurrency to Swift and SwiftUI

    iOS, macOS, tvOS, watchOS

    Discover how Core Data is adopting the new concurrency capabilities of Swift 5.5, leading to more concise, efficient, and safe asynchronous code. We'll show you how to update Core Data in your apps to work with concurrency, and detail the many other improvements throughout the framework that make working with Swift and SwiftUI more expressive and powerful.

    Watch

  • Build Mail app extensions

    macOS

    Meet MailKit: the best way to build amazing experiences on top of Mail. MailKit enables apps to easily and securely interact with the Mail app for macOS. We'll deep dive into the MailKit API, and show you how to create extensions for composing messages, message actions, secure email, and content blocking.

    Watch

  • Build custom experiences with Group Activities

    iOS, macOS, tvOS

    Go beyond basic streaming and interaction and discover how you can build advanced SharePlay experiences using the full power of the Group Activities framework. We'll show you how to adapt a simple drawing app into a real-time shared canvas, explore APIs like GroupSessionMessenger — which helps send and receive custom messages between participants in the group — and learn how to put the finishing touches on a custom SharePlay experience.

    Watch

  • Build interactive tutorials using DocC

    iOS, macOS, tvOS, watchOS

    Discover how you can author immersive tutorials from scratch with DocC. We'll demonstrate how you can bring together rich instructions, example code, and images through the DocC syntax to showcase your Swift framework in action. And we'll go over how to create progressive training that can provide interactive learning opportunities and help people better understand use cases for your framework.

    Watch

  • Capture high-quality photos using video formats

    iOS, macOS

    Your app can take full advantage of the powerful camera systems on iPhone by using the AVCapture APIs. Learn how to choose the most appropriate photo or video formats for your use cases while balancing the trade-offs between photo quality and delivery speed. Discover some powerful new algorithms which can help you deliver greatly improved photo quality when you use video formats in your app. To learn more about improvements in AVCapture, be sure to also see the "What's new in camera capture" video.

    Watch

  • Create image processing apps powered by Apple Silicon

    iOS, macOS

    Discover how to optimize your image processing app for Apple silicon. Explore how to take advantage of Metal render command encoders, tile shading, unified memory architecture, and memoryless attachments. We'll show you how to use Apple's unique tile based deferred renderer architecture to create power efficient apps with low memory footprint, and take you through best practices when migrating your compute-based apps from discrete GPUs to Apple silicon.

    Watch

  • Deliver a great playback experience on tvOS

    tvOS

    Find out how you can use Apple TV's redesigned playback interface to build great media experiences in your apps. Learn how the latest interface helps people access relevant controls and information while maintaining focus on content. We'll show you how you can adopt AVPlayerViewController and other APIs for your tvOS app to help people find, play, and enjoy content. To get the most out of this session, we recommend having a basic understanding of AVKit.

    Watch

  • Design for Group Activities

    iOS, macOS, tvOS

    Learn how you can design your app to support SharePlay experiences. We'll show you how you can bring people together in your app using the Group Activities framework, and adapt your design to focus on group-first content sharing. And we'll explore ideas and iteration around apps and functions you can create for people using SharePlay on a FaceTime call.

    Watch

  • Design for spatial interaction

    iOS, watchOS

    Discover the principles for creating intuitive physical interactions between two or more devices, as demonstrated by Apple designers who worked on features for iPhone, HomePod mini, and AirTag. Explore how you can apply these patterns to your own app when designing features for Apple platforms, and help people using your app interact more directly with their surroundings.

    Watch

  • Detect and diagnose memory issues

    iOS, macOS

    Discover how you can understand and diagnose memory performance problems with Xcode. We'll take you through the latest updates to Xcode's tools, explore Metrics, check out the memgraph collection feature in XCTest, and learn how to catch regressions using a Performance XCTest.

    Watch

  • Develop advanced web content

    iOS, macOS

    Develop in JavaScript, WebGL, or WebAssembly? Learn how the latest updates to Safari and WebKit — including language changes to class syntax — can help simplify your development process, enhance performance, and improve security. We'll explore several web APIs that can help provide better interoperability and bring new capabilities to your web content.

    Watch

  • Diagnose unreliable code with test repetitions

    iOS, macOS, tvOS, watchOS

    Test repetitions can help you debug even the most unreliable code. Discover how you can use the maximum repetitions, until failure, and retry on failure testing modes within test plans, Xcode, and xcodebuild to track down bugs and crashers and make your app more stable for everyone. To get the most out of this session, we recommend being familiar with XCTest and managing tests through test plans. For more information, check out “Testing in Xcode” from WWDC19.

    Watch

  • Direct and reflect focus in SwiftUI

    iOS, macOS, tvOS, watchOS

    With device input — as with all things in life — where you put focus matters. Discover how you can move focus in your app with SwiftUI, programmatically dismiss the keyboard, and build large navigation targets from small views. Together, these APIs can help you simplify your app's interface and make it more powerful for people to find what they need.

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  • Discover Web Inspector improvements

    iOS, macOS

    Web Inspector provides the tools for you to understand and debug your web pages on macOS, iOS, and iPadOS. We'll take you through the latest features and improvements to Web Inspector, including a new overlay for inspecting CSS Grid containers on your pages, even more configurable breakpoints to make debugging simpler, and the ability to create and edit Audits.

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  • Discover and curate Swift Packages using Collections

    iOS, macOS, tvOS, watchOS

    Whether you're curating packages for your team, for education purposes, or to share with other developers, Swift Package Collections can help you discover, explore and import new packages into your project. Discover improvements in the Swift Package workflow using Collections, and learn how you can curate, create, sign, and share your own Swift Package Collections.

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  • Discover compilation workflows in Metal

    iOS, macOS, tvOS

    The Metal shading language is a powerful C++ based language that allows apps to render stunning effects while maintaining a flexible shader development pipeline. Discover how to more easily build and extend your render pipelines using Dynamic Libraries and Function Pointers. We'll also show you how to accelerate your shader compilation at runtime with Binary Function Archives, Function Linking, and Function Stitching.

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  • Discover rolling clips with ReplayKit

    iOS, macOS, tvOS

    Never again miss anyone's great moment in your game or app. Learn about ReplayKit's latest update — clips screen recording — which provides your app with a rolling buffer of past video and audio samples. When memorable moments happen, discover how you can record and save it for people, and find out how you can surface those clips when they're most relevant. Lastly, we'll take you through integrating ReplayKit into your iOS and macOS apps.

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  • Distribute apps in Xcode with cloud signing

    iOS, macOS, tvOS, watchOS

    Discover how to distribute your apps directly to App Store Connect and all the distribution methods supported in Xcode. Explore how to automate distribution for your apps, and learn about improvements to the distribution workflow like cloud signing, app record creation, and build number management.

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  • Donate intents and expand your app’s presence

    iOS, watchOS

    Discover how you can make key parts of your app available for someone at exactly the right moment — without them ever needing to open it. Learn how to craft and donate intents to the system, helping you surface relevant and contextual information about your app in Siri, Focus, Shortcuts, the Smart Stack, and more. We'll explore how the system intelligently identifies information and show you techniques for structuring intents to help increase engagement and visibility for your app.

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  • Embrace Expected Failures in XCTest

    iOS, macOS, tvOS, watchOS

    Testing is a crucial part of building a great app: Great tests can help you track down important issues before release, improve your workflow, and provide a quality experience upon release. For issues that can't be immediately resolved, however, XCTest can help provide better context around those problems with XCTExpectFailure. Learn how this API works, its strict behavior, and how to improve the signal-to-noise ratio in your tests to identify new issues more efficiently.

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  • Explore ARKit 5

    iOS

    Build the next generation of augmented reality apps with ARKit 5. Explore how you can use Location Anchors in additional regions and more easily onboard people into your location-based AR experience. Learn more about Face Tracking and Motion Capture. And discover best practices for placing your AR content in the real world. We'll also show you how you can integrate App Clip Codes into your AR app for easy discovery and precise positioning of your virtual content.

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  • Explore Digital Crown, Trackpad, and iPad pointer automation

    iOS, macOS, tvOS, watchOS

    Learn how you can interact with devices in UI Tests in Xcode 13. Discover newly-automatable input methods including iPadOS pointer, watchOS Digital Crown, and enhanced macOS trackpad scrolling APIs.

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  • Explore HDR rendering with EDR

    iOS, macOS

    EDR is Apple's High Dynamic Range representation and rendering pipeline. Explore how you can render HDR content using EDR in your app and unleash the dynamic range capabilities of your HDR display including Apple's internal internal displays and Pro Display XDR. We'll show you how game and pro app developers can take advantage of the native EDR APIs on macOS for even more control, and provide best practices for deciding when HDR is appropriate, applying tone-mapping, and delivering HDR content.

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  • Extract document data using Vision

    iOS, macOS

    Discover how Vision can provide expert image recognition and analysis in your app to extract information from documents, recognize text in multiple languages, and identify barcodes. We'll explore the latest updates to Text Recognition and Barcode Detection, show you how to bring all these tools together with Core ML, and help your app make greater sense of the world through images or the live camera. To learn more about Vision, watch “Detect people, faces, and poses using Vision” from WWDC21 as well as “Explore Computer Vision APIs” from WWDC20. For further understanding of all that Vision has to offer, watch “Detect people, faces, and poses using Vision” from WWDC21 as well as “Explore Computer Vision APIs” from WWDC20.

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  • Improve MDM assignment of Apps and Books

    iOS, macOS, tvOS

    Discover the Apps and Books Management API and explore how you can assign an organization's owned apps and books to managed users and devices. Learn about the latest API improvements and find out how you can subscribe to and receive notifications around asset counts, assignments, and registered users in your organization. And discover how you can take advantage of asynchronous processing to significantly reduce the number of requests you need to make for large assignments.

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  • Improve access to Photos in your app

    iOS, macOS

    PHPicker is the simplest and most secure way to integrate the Photos library into your app — and it's getting even better. Learn how to handle ordered selection of images in your app, as well as pre-selecting assets any time the picker is shown. And for apps that need to integrate more deeply with PhotoKit, discover how you can use PHCloudIdentifier to sync photo project content across devices, helping people easily transition their image work between iPhone, iPad, and Mac. We'll also take you through the latest updates to the Limited Photos Library. Find out how your app can help people easily extend the initial set of images they've authorized — including bringing up the selection UI at any time and recognizing when someone makes new or updated selections. Lastly, explore how you can create or access existing photo albums.

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  • Localize your SwiftUI app

    iOS, macOS, tvOS, watchOS

    Learn how to localize your SwiftUI app and make it available to a global audience. Explore how you can localize strings in SwiftUI, including those with styles and formatting. We'll demonstrate how you can save time by having SwiftUI automatically handle tasks such as layout and keyboard shortcuts, and take you through the localization workflow in Xcode 13. To get the most out of this session and learn more about the Markdown language and AttributedString, check out "What's new in Foundation" from WWDC21.

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  • Manage software updates in your organization

    iOS, macOS

    In a managed device environment, you often need to control the pace of software updates while you test the latest operating systems within your company or education institution. Discover the tools you have at your disposal to defer, deploy, and enforce software updates.

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  • Meditation for fidgety skeptics

    Dan Harris is an Emmy Award-winning journalist and the co-anchor of ABC's weekend editions of Good Morning America. After having a nationally-televised panic attack in 2004, he found himself on a long and often bizarre journey that ended with him discovering mindfulness meditation. Dan will share his story, which has led to his authoring two books and creating a popular podcast and app that have helped many (including previous non-believers like himself) improve their lives. He will be joined by Jeff Warren, renowned meditation teacher and Dan's co-author of the bestselling book Meditation For Fidgety Skeptics, to offer practical steps that anyone can take to manage the wide-ranging stresses and anxieties of today's world to become 10% happier.

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  • Meet ClassKit for file-based apps

    iOS

    The ClassKit framework can help surface educational activities within your app to teachers using the Schoolwork app. Discover how you can provide teachers with greater insights into student learning by adopting the latest file-based API to report student progress data within your app. We'll also show you how to use ClassKit to report out different data types, and how to test your implementation in developer mode.

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  • Meet privacy-preserving ad attribution

    iOS, macOS

    Discover how you can measure your ad campaigns in apps and on the web without compromising privacy. We'll introduce you to Private Click Measurement and explore SKAdNetwork, which provides you with a more secure, private, and useful way to measure your app installs.

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  • Optimize high-end games for Apple GPUs

    iOS, macOS, tvOS

    Optimize your high-end games for Apple GPUs: We'll show you how you can use our rendering and debugging tools to eliminate performance issues and make your games great on Apple platforms. Learn from our experiences working with developers at Larian Studios and 4A Games as we help them optimize their games for Apple GPUs. We'll explore various techniques for improving your game's performance, including optimizing shaders, reducing memory bandwidth utilization, and increasing the overlap of your GPU workloads. We'll also dive into the new GPU Timeline profiling tool in Xcode 13 to identify possible performance bottlenecks in “Divinity: Original Sin 2” when running on iPad. For this session, you should be familiar with the tile-based deferred rendering architecture in Apple GPUs, and have a working knowledge of Xcode and the Metal API. Check out “Discover Metal debugging, profiling, and asset creation tools” or the WWDC20 session “Optimize Metal apps and games with GPU counters” to learn more about using our tools to profile graphics workloads.

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  • Principles of great widgets

    iOS, macOS

    Explore the foundations of great widgets by keeping them relevant and customizable. Learn how to keep widgets up to date with timeline entries and TimelineReloadPolicies. Discover how to adapt your widget to different presentation environments and physical location. And lastly, find out how to create customizable widgets that someone can personalize to their liking.

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  • Support Full Keyboard Access in your iOS app

    iOS

    iPhone and iPad support numerous input modes for those with motor impairments, including touch interaction modification, Switch Control, and Full Keyboard Access. We'll explore how people can interact with their devices solely through keyboard input, working through a real-life example to discover key APIs. We'll also take you through some best practices for supporting motor accessibility when you integrate Full Keyboard Access in your apps.

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  • Support customers and handle refunds

    iOS, macOS, tvOS, watchOS

    Great customer support is critical to running a successful business on the App Store. Discover how you can provide a frictionless support experience to customers who make in-app purchases, including APIs that make it easy for customers to manage or cancel their auto-renewable subscription, or request refunds from directly within your app. We'll cover best practices for handling refunds, as well as additional APIs that can help you better support your customers.

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  • Swift concurrency: Behind the scenes

    iOS, macOS, tvOS, watchOS

    Dive into the details of Swift concurrency and discover how Swift provides greater safety from data races and thread explosion while simultaneously improving performance. We'll explore how Swift tasks differ from Grand Central Dispatch, how the new cooperative threading model works, and how to ensure the best performance for your apps. To get the most out of this session, we recommend first watching “Meet async/await in Swift,” “Explore structured concurrency in Swift,” and “Protect mutable state with Swift actors.”

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  • Sync files to the cloud with FileProvider on macOS

    macOS

    Find out how you can use the FileProvider framework to build a comprehensive cloud sync solution. We'll show you how to approach building a file provider extension, and explore how you can effortlessly integrate your extension with file system features such as safe save, disk space management, Finder integration and more.

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  • There and back again: Data transfer on Apple Watch

    watchOS

    Advances in Apple Watch give you more ways to communicate to and from your app, and new audiences to consider. Learn what strategies are available for data communication and how to choose the right tool for the job. Compare and contrast the benefits of using technologies such as iCloud Keychain, Watch Connectivity, Core Data, and more.

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  • Thursday@WWDC21

    Where did the WWDC week go? We'll tell you: Check out everything you missed on Thursday and tune in for a quick preview of our final day at Dub Dub.

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  • Understand and eliminate hangs from your app

    iOS, macOS

    Discover how you can track down hangs and delays in your app. We'll show you tools and methods to discover hangs and their causes, learn about anti-patterns that can lead to hangs, explore best practices for eliminating hangs like GCD, and provide guidance on when you should consider asynchronous code to improve your app performance.

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  • WWDC21 Apple Design Awards

    iOS, macOS, tvOS, watchOS

    The Apple Design Awards honors excellence in innovation, ingenuity, and technical achievement in app and game design. Watch along as we reveal and celebrate the 2021 winners.

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  • WWDC21 Apple Design Awards (ASL)

    iOS, macOS, tvOS, watchOS

    The Apple Design Awards honors excellence in innovation, ingenuity, and technical achievement in app and game design. Watch along as we reveal and celebrate the 2021 winners. This version includes American Sign Language (ASL) interpretation.

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  • What's new in App Analytics

    iOS, macOS, tvOS, watchOS

    App Analytics helps you maximize your opportunity on the App Store by providing privacy-friendly insights about your app. Learn about four new ways to grow your business, including information about custom product pages, in-app events, product page optimization, and new metrics about transactions on the store.

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  • What’s new in AVFoundation

    iOS, macOS, tvOS, watchOS

    Discover the latest updates to AVFoundation, Apple's framework for inspecting, playing, and authoring audiovisual presentations. We'll explore how you can use AVFoundation to query attributes of audiovisual assets, further customize your custom video compositions with timed metadata, and author caption files.

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Friday
  • ARC in Swift: Basics and beyond

    iOS, macOS, tvOS, watchOS

    Learn about the basics of object lifetimes and ARC in Swift. Dive deep into what language features make object lifetimes observable, consequences of relying on observed object lifetimes and some safe techniques to fix them.

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  • Accelerate machine learning with Metal Performance Shaders Graph

    iOS, macOS

    Metal Performance Shaders Graph is a compute engine that helps you build, compile, and execute customized multidimensional graphs for linear algebra, machine learning, computer vision, and image processing. Discover how MPSGraph can accelerate the popular TensorFlow platform through a Metal backend for Apple products. Learn how to add control flow to your graphs, manage the graph compilation for optimal performance, and use the MPSGraph operations to accelerate the hardest compute applications with only a few lines of code.

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  • Accelerate networking with HTTP/3 and QUIC

    iOS, macOS, tvOS, watchOS

    The web is changing, and the next major version of HTTP is here. Learn how HTTP/3 reduces latency and improves reliability for your app and discover how its underlying transport, QUIC, unlocks new innovations in your own custom protocols using new transport functionality and multi-streaming connection groups.

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  • Bring Recurring Leaderboards to your game

    iOS, macOS, tvOS

    Recurring leaderboards are a great way to encourage players to keep coming back to your game. Code along with us as we take you through how to set up a recurring leaderboard, both within App Store Connect and in your game itself. For a refresher on the differences between recurring and classic leaderboards before beginning this code-along, we recommend watching the recurring leaderboards section of "Tap into Game Center: Leaderboards, Achievements, and Multiplayer" from WWDC20.

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  • Build a research and care app, part 1: Setup onboarding

    iOS

    Learn how ResearchKit and CareKit can work together to take the tedium out of paper surveys. Code along with us and build a working care pilot app. Explore best practices for onboarding and consent with ResearchKit, and find out how your app can require participants to sign consent documents by leveraging CareKit's store and UI components. This is the first session in a three-part Code-Along series. To get the most out of this series, we recommend that you have some basic familiarity with both ResearchKit and CareKit. For more background, watch "ResearchKit and CareKit Reimagined” from WWDC19.

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  • Build a research and care app, part 2: Schedule tasks

    iOS

    Learn how ResearchKit and CareKit can work together to take the tedium out of paper surveys. Continue coding along with us and explore how you can make it easier than ever to schedule surveys for your study participants. You'll also learn advanced techniques for crafting evolving regiments in CareKit and see how ResearchKit's active tasks can help capture important measurements out of clinic. This is the second session in a three-part Code-Along series. To get the most out of this session, we recommend first watching “Build a research and care app, part 1.” And for more background on these frameworks, watch "ResearchKit and CareKit Reimagined” from WWDC19.

    Watch

  • Build a research and care app, part 3: Visualize progress

    iOS

    Learn how ResearchKit and CareKit can work together to take the tedium out of paper surveys. Join us for the last part of our code along as we put the finishing touches on our care pilot app. Explore how you can use advanced CareKit APIs to customize the appearance and behavior of task cards, find out how to plot answers to ResearchKit surveys in CareKit charts, and discover how you can use ResearchKit to present engaging educational content. This is the final session in a three-part Code-Along series. To get the most out of this session, we recommend first watching parts one and two of “Build a research and care app.” And for more background on these frameworks, watch "ResearchKit and CareKit Reimagined” from WWDC19.

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  • Build apps that share data through CloudKit and Core Data

    iOS, macOS, tvOS, watchOS

    Learn how to easily build apps that share data between multiple iCloud users with NSPersistentCloudKitContainer. Discover how to create informative experiences around shared data and learn about the CloudKit technologies that support these features in Core Data. To get the most out of this session, check out our previous videos on NSPersistentCloudKitContainer: "Using Core Data With CloudKit" from WWDC19 and "Sync a Core Data store with the CloudKit public database" from WWDC20.

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  • Coordinate media playback in Safari with Group Activities

    macOS

    Create SharePlay experiences that people can enjoy on the web and in your companion app. Learn how you can use the Group Activities framework in combination with a companion website to bring SharePlay to Safari, letting people connect with each other for enjoyable group interactions — even if they haven't yet downloaded your app from the App Store.

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  • Create 3D workflows with USD

    iOS, macOS

    Discover the flexibility, versatility and power of Pixar's Universal Scene Description (USD) for your 3D workflows. Learn how you can use the USD file format in your professional workflows for macOS: Scan 3D models of your real-world objects using Object Capture, utilize the potential of third-party digital content creation tools, and build high-quality rendered sequences.

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  • Cross reference content with the Apple Music API

    iOS, macOS

    Discover how you can cross-reference Apple Music content within your app using the Apple Music API. We'll show you how to reference content across different geographical regions, map explicit to clean-equivalent content, fetch catalog and library relationships, and how to match content using the UPC code.

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  • Design for Safari 15

    iOS, macOS

    Meet Safari 15: redesigned and ready to help people explore the web. Discover how you can approach designing websites and apps for Safari, and learn how to incorporate the tab bar in your designs. We'll also take you through features like Live Text and accessibility best practices, explore the latest updates to CSS and Form Controls, and learn how to use the aspect-ratio property in CSS to create incredible websites.

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  • Detect bugs early with the static analyzer

    iOS, macOS, tvOS, watchOS

    Discover how Xcode can automatically track down infinite loops, unused code, and other issues before you even run your app. Learn how, with a single click, Xcode can analyze your project to discover security issues, logical bugs, and other hard-to-spot errors in Objective-C, C, and C++. We'll show you how to use the static analyzer to save you time investigating bug reports and improve your app's overall quality.

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  • Developer spotlight: Accessibility

    How do you approach creating apps for everyone? Learn from developers who are blind or deaf themselves as they discuss the process of making technology accessible. Discover how their unique perspectives have sparked innovation at their companies and helped make their apps even more inclusive.

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  • Discover breakpoint improvements

    iOS, macOS, tvOS, watchOS

    Breakpoints can help you debug issues by allowing you to pause and inspect problems in the middle of a process. Discover the latest improvements to breakpoints in Xcode including column and unresolved breakpoints. We'll also go over best practices for general breakpoints and LLDB tips and tricks.

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  • Explore advanced project configuration in Xcode

    iOS, macOS, tvOS, watchOS

    Working with more complex Xcode projects? You've come to the right place. Discover how you can configure your project to build for multiple Apple platforms, filter content per-platform, create custom build rules and file dependencies, and more. We'll take you through multi-platform framework targets, detail how to optimize your project and scheme configuration, and show you how to make effective use of configuration settings files. We'll explore configuring schemes for parallel builds and implicit dependencies, script phases, custom build rules, setting up input and output file dependencies, build phase file lists, and deduplicating work via aggregate targets. Lastly, find out more about the build settings editor, how levels work, and configuration settings file syntax.

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  • Friday@WWDC21

    It's time to say adieu to the week, and what a week it was! Tune in as we recap Friday and close out WWDC21.

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  • Meet CloudKit Console

    iOS, macOS, tvOS, watchOS

    Discover how CloudKit Console can help you better interact with your containers. We'll show you how to put the database app to work and define, modify, and deploy schema changes with confidence. You'll learn how to craft queries in the query builder and filter your records with ease. And we'll explore how to use telemetry and log data to gain new insights into your app behavior over time. To get the most out of this session, we recommend being familiar with CloudKit and its development and production environments, as well as a basic understanding of record and data types.

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  • Mitigate fraud with App Attest and DeviceCheck

    iOS, macOS, tvOS

    Discover how to use App Attest and DeviceCheck, Apple's powerful anti-fraud tools, created to safeguard your apps and content. Unlock the secrets of deploying App Attest by incorporating it into your app to block unauthorized modifications of your app and content. We'll also show you how to use DeviceCheck to ensure you can distinguish between customers who have received premium content in your app, and those who have attained it through illegitimate means.

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  • Optimize for 5G networks

    iOS

    5G enables new opportunities for your app or game through better performance for data transfer, higher bandwidth, lower latency, and much more. Discover how you can take advantage of the latest networking technology and Apple hardware to create adaptive experiences for your content that best suit someone's data connection and optimize network traffic.

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  • Optimize for variable refresh rate displays

    iOS, macOS

    Discover how to achieve smooth screen updates on all Apple platforms that support dynamic display timing. Learn techniques for pacing full-screen game updates on Adaptive Sync displays in macOS, and find out how Low Power Mode and other system states affect frame rate availability on ProMotion displays. We'll also share best practices for driving custom drawing using display link APIs.

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  • Practice audio haptic design

    iOS

    Discover how you can deliver rich app experiences that include animation, sound, and haptics on iPhone. Learn key concepts for designing multimodal experiences within the Core Haptics framework. We'll take you through our sample HapticRicochet app — where haptic and sound feedback is designed in harmony with key interactive moments — and show you how to create magical and delightful experiences. To get the most out of this session, we recommend first watching “Expanding the Sensory Experience with Core Haptics” from WWDC19, and checking out the HapticBounce sample project (which requires Xcode, iPhone 8 or newer, and a basic knowledge of Swift). Familiarity with Core Haptics is helpful, but not required.

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  • Reduce network delays for your app

    iOS, macOS, tvOS, watchOS

    CPU performance and network throughput rates keep improving, but the speed of light is one limit that isn't going any higher. Learn the APIs and best practices to maximize your app's responsiveness and efficiency by keeping network round-trip times low and minimizing the number of round trips when performing network operations.

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  • Safeguard your accounts, promotions, and content

    iOS, macOS, tvOS, watchOS

    Discover how to keep your accounts, apps, and content protected. We'll explore the tools Apple has built to help developers keep their apps and systems safe and secure, and show you how to safeguard against attackers, bad actors and nefarious activity to help protect your ecosystem.

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  • Streamline your localized strings

    iOS, macOS, tvOS, watchOS

    When you localize the text within your app, you can help make your app more accessible to a worldwide audience. Discover best practices for building your localization workflow, including how to write and format strings accurately, and learn how to prepare strings for localization in different languages using Xcode.

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  • SwiftUI on the Mac: Build the fundamentals

    macOS

    Code along with us as we use SwiftUI to build a Mac app from start to finish. Discover four principles all great Mac apps have in common, and learn how to apply those principles in practice using SwiftUI. We'll show you how to create a powerful, flexible sidebar experience and transform lists to tables within a detail view, then discuss best best practices for data organization. Next, we'll explore the simple .searchable modifier and find out how to add support for the toolbar and search. And to close out part one, we'll learn how to build a great multiple-window experience and provide menu bar support. This is the first session in a two-part Code-Along series. To get the most out of this series, we recommend that you have some basic familiarity with SwiftUI. For more background, watch "Introduction to SwiftUI" from WWDC20.

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  • SwiftUI on the Mac: The finishing touches

    macOS

    Join us for part two of our Code-Along series as we use SwiftUI to build a Mac app from start to finish. The journey continues as we explore how our sample gardening app can adapt to a person's preferences and specific workflows. Learn how SwiftUI apps can automatically react to system settings, and discover how you can use that information to add more personality to an app. We'll show you how you can give people the flexibility to customize an app through Settings, and explore how to use different workflows for manipulating someone's data (like drag and drop). To finish, we'll show you how you can move data to and from an app, incorporating features like Continuity Camera to provide a simple workflow for importing images. This is the second session in a two-part Code-Along series. To get the most out of this session, we recommend first watching “SwiftUI on the Mac: Build the fundamentals.” And for more background on working with these frameworks, watch Introduction to SwiftUI from WWDC20.

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  • Tailor the VoiceOver experience in your data-rich apps

    iOS, macOS

    Learn how to present complex data through VoiceOver with the Accessibility Custom Content API. Discover how you can deliver accessibility information in a concise form, and only when someone wants it. We'll show you how you can integrate AXCustomContent and help people who want VoiceOver enabled to navigate your data-rich apps in an efficient manner. To get the most out of this session, you should be familiar with general accessibility principles and VoiceOver accessibility APIs available in Swift and SwiftUI.

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  • Tune your Core ML models

    iOS, macOS, tvOS, watchOS

    Bring the power of machine learning directly to your apps with Core ML. Discover how you can take advantage of the CPU, GPU, and Neural Engine to provide maximum performance while remaining on device and protecting privacy. Explore MLShapedArray, which makes it easy to work with multi-dimensional data in Swift, and learn more about ML Package support in Core ML, which includes support for ML Programs. This modern, programmatic approach to machine learning provides typed execution and tremendous flexibility. We'll also show you how to analyze performance of your models and tune the execution of each operation in a model using ML Programs.

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  • Use Accelerate to improve performance and incorporate encrypted archives

    iOS, macOS, tvOS, watchOS

    The Accelerate framework helps you make large-scale mathematical computations and image calculations that are optimized for high-performance, low-energy consumption. Explore the latest updates to Accelerate and its Basic Neural Network Subroutines library, including additional layers, activation functions, and improved optimizer support. Check out improvements to simd.h that include better support for C++ templates. Discover support for Apple Encrypted Archive, an extension to Apple Archive that combines compression with powerful encryption and a digital signature. And learn how you can keep data your safe and secure without compromising on performance.

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  • Write a DSL in Swift using result builders

    iOS, macOS, tvOS, watchOS

    Some problems are easier to solve by creating a customized programming language, or “domain-specific language.” While creating a DSL traditionally requires writing your own compiler, you can instead use result builders with Swift 5.4 to make your code both easier to read and maintain. We'll take you through best practices for designing a custom language for Swift: Learn about result builders and trailing closure arguments, explore modifier-style methods and why they work well, and discover how you can extend Swift's normal language rules to turn Swift into a DSL. To get the most out of this session, it's helpful (though not necessary) to have some experience writing SwiftUI views. You won't need to know anything about parser or compiler implementation.

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