Overview

I am using Significant Location Change (SLC) monitoring to relaunch my app after it has been terminated. I have implemented SLC in two separate apps installed on the same device, and I would like to understand how the system delivers SLC events in this scenario. Specifically: Will both apps receive the SLC event at the same time, or can there be differences in the timing of delivery? If there are differences, what factors influence when each app receives the event? What criteria or system conditions determine how and when SLC events are delivered to different apps on the same device? Any clarification on the event delivery behavior would be greatly appreciated.

This is a bit complicated to explain so bare with me. I am working on building an app that allows you to send real time video/camera captures from one Apple device to another. I am using a custom UDP protocol built on top of NWListener, NWBrowser, and NWConnection APIs. It works fine, but there are a few issues that seems to all be related to awdl: When transmitting via WiFi over the router (not using peer-to-peer), there are periodic interruptions when the wireless card on the device changes channels for awdl polling. This is resolved by changing the 5GHz WiFi channel on the router to channel 149 (or disabling AWDL altogether which is not really feasible). In order to work around number 1, I decided to build in an option to toggle/prefer peer-to-peer transmission in the app thinking that if everything goes over a peer-to-peer connection the jitter caused from the channel switching should go away. This also works, but with an important caveat. The default transmission is extremely choppy until you take an OS action that “elevates” the AWDL connection into “realtime” mode. I am using includePeerToPeer on the listener, browser, and connection as well as serviceClass interactiveVideo. For number 1, you can understand that asking users to change the channel on their router is not a great user experience, but the problem is the peer-to-peer connection workaround is also not great by default. For number 2, as an example of the behavior, I can send a stream from my Mac to my iPad over a peer-to-peer connection and it works but the video is very choppy until I move my cursor from my Mac to my iPad to trigger Universal Control. I captured the OS logs while doing this and can confirm that something happens to trigger “realtime” mode on the AWDL connection. After that, the streaming is totally smooth with zero latency. Some log samples: 2026-03-19 12:42:01.277968-0400 0x1ae294c Default 0x0 495 3 rapportd: (CoreUtils) [com.apple.rapport:CLinkD] Update client from UniversalControl:697 2026-03-19 12:42:01.278031-0400 0x1ae294c Default 0x0 495 0 rapportd: (CoreUtils) [com.apple.CoreUtils:AsyncCnx] CLinkCnx-6089: Connect start: 'CLink-ed3b9618b4e0._companion-link._tcp.local.%13' 2026-03-19 12:42:01.278149-0400 0x1ae294c Default 0x0 495 0 rapportd: (CoreUtils) [com.apple.CoreUtils:AsyncCnx] CLinkCnx-6089: Querying SRV CLink-ed3b9618b4e0._companion-link._tcp.local.%13 2026-03-19 12:42:01.279454-0400 0x1ae253a Info 0x0 382 0 wifip2pd: [com.apple.awdl:datapathInitiator] Created AWDLDatapathInitiator clink-ed3b9618b4e0._companion-link._tcp.local <To: 2e:f2:5a:15:76:52> 2026-03-19 12:42:01.279498-0400 0x1ae294c Default 0x0 495 0 rapportd: (CoreUtils) [com.apple.CoreUtils:AsyncCnx] CLinkCnx-6089: Resolving DNS f970afcc-1f1c-47af-a3f3-0236c9f9bbb0.local.%13 2026-03-19 12:42:01.279588-0400 0x1ae253a Default 0x0 382 0 wifip2pd: [com.apple.awdl:datapathInitiator] AWDLDatapathInitiator clink-ed3b9618b4e0._companion-link._tcp.local <To: 2e:f2:5a:15:76:52> was started 2026-03-19 12:42:01.282537-0400 0x1ae294c Default 0x0 495 0 rapportd: (Network) [com.apple.network:path] nw_path_evaluator_start [5C54D967-624D-4269-B080-6C7AE63218C7 IPv6#1e905043%awdl0.49154 generic, attribution: developer] path: satisfied (Path is satisfied), interface: awdl0[802.11], dns, uses wifi 2026-03-19 12:42:01.596450-0400 0x1ae253a Debug 0x0 382 0 wifip2pd: [com.apple.awdl:driver] Received event realtimeMode 2026-03-19 12:42:01.596589-0400 0x1ae253a Default 0x0 382 0 wifip2pd: [com.apple.awdl:interface] Realtime mode updated true I noticed that on iOS 26 and iPadOS 26 a realtime mode was added specifically to the Wi-Fi Aware API which I assume does what I want: https://developer.apple.com/documentation/wifiaware/waperformancemode/realtime, but I am looking for a solution that works with the existing network API and also on previous OS versions. I have already tried a lot of things, but is there any way to programmatically trigger “realtime” mode? For additional context, the goal here is to have extremely low latency that also works for gaming. The actual latency introduced in 1 is approximately 30-50ms around once a second… adding a buffer to the stream makes the video completely smooth, but the extra delay on the receiver end is not acceptable for this use case. Any help or ideas would be appreciated. I can’t easily share a reproduce case right now, and even if I could, getting multiple devices into the exact state along with the router configuration in order to reproduce is going to be pretty difficult anyway.

Hey everyone 👋 I have 14 years of experience in iOS development, starting in my mid-teens and later working as a senior and lead developer with Fortune 50 companies. Around 1.5 years ago I began my indie journey as a side hustle, and for the past 3 months I have been building apps full time with a growing portfolio and increasing revenue 📈 I currently handle everything myself including development, ASO, and design, with marketing planned for later 🚀 I just shipped a major release last week and taking a relaxed week now, so feel free to ask anything about iOS development, indie life, ASO, monetization, or related topics 💬

My app has been rejected repeatedly for showing 3rd party content but the content they flagged is owned by me. I believe it was caused by me charging the display name of the app, however the add id is the same and the bundle id is the same as before. Any time I submit with those comment, it is still being rejected. If you have any suggestions it would be helpful.

Any plans to be able to allow to store Uric Acid (UA) and Ketones readings in Apple Health with HealthKit? There are now many blood test strips in the market that allow to read Glucose, UA and Ketones and currently only Glucose seems to be supported by HealthKit. Thank you

I’m working toward an official release of our application. The app is designed to interface with peripheral devices, which means users need both the mobile app and the peripheral devices to log in and use it. Because of that, how would the review process work when I get to that point?

When using ShareLink in SwiftUI to share an image, the “Save Image” action dismisses not only the share sheet but also the presenting SwiftUI view. The behavior differs depending on whether the photo library permission alert appears. Observed behavior: The first time the user taps Save Image, the system permission alert appears. After granting permission, the image saves successfully and the share sheet dismisses normally. On subsequent attempts, the image is saved successfully, but both the share sheet and the presenting view are dismissed unexpectedly. Expected behavior: After saving the image, only the share sheet should dismiss. The presenting SwiftUI view should remain visible. Steps to Reproduce Present a SwiftUI view using .sheet. Inside that view, add a ShareLink configured to export a PNG image using Transferable. Tap the ShareLink button. Choose Save Image. Grant permission the first time (if prompted). Repeat the action. Result: On subsequent saves, the share sheet dismisses and the presenting view is dismissed as well. Sample code ` internal import System import UniformTypeIdentifiers import SwiftUI struct RootView: View { @State private var isPresented: Bool = false var body: some View { ZStack { Color.white Button("Show parent view") { isPresented = true } } .sheet(isPresented: $isPresented) { ParentView() } } } struct ParentView: View { @State private var isPresented: Bool = false var body: some View { NavigationStack { ZStack { Color.red.opacity(0.5) } .toolbar { ToolbarItem() { let name = "\(UUID().uuidString)" let image = UIImage(named: "after")! return ShareLink( item: ShareableImage(image: image, fileName: name), preview: SharePreview( name, image: Image(uiImage: image) ) ) { Image(uiImage: UIImage(resource: .Icons.share24)) .resizable() .foregroundStyle(Color.black) .frame(width: 24, height: 24) } } } } } } struct ShareableImage: Transferable { let image: UIImage let fileName: String static var transferRepresentation: some TransferRepresentation { FileRepresentation(exportedContentType: .png) { item in let fileURL = FileManager.default.temporaryDirectory .appendingPathComponent(item.fileName) .appendingPathExtension("png") guard let data = item.image.pngData() else { throw NSError(domain: "ImageEncodingError", code: 0) } try data.write(to: fileURL) return SentTransferredFile(fileURL) } } } `

Every time I try to focus on the subtitle field in the App Clip section, I encounter an error (as shown in the attached screenshot). This is blocking us from uploading a critical version of our app. We need assistance to proceed with the submission. I’ve already tried using Chrome, Safari and Firefox, but the issue persists.

I am getting bug reports from users that occasionally the AlarmKit alarms scheduled by my app are going off exactly at midnight. In my app, users can set recurring alarms for sunrise/sunset etc. I implement this as fixed schedule alarms over the next 2-3 days with correct dates pre-computed at schedule time. I have a background task which is scheduled to run at noon every day to update the alarms for the next 2-3 days. Are there any limitations to the fixed schedule which might be causing this unintended behavior of going off at midnight?

Hi Guys, Hope you're well! I am consistently encountering a build warning in Xcode 26 that prevents proper symbolication of crash logs. The warning states: "warning: (arm64) /Users/mickey/Library/Developer/Xcode/DerivedData/CalendarSync-bjuvwxojzofqzzcmzzpdozbujrge/Build/Products/Debug-iphoneos/CalendarSync.app/CalendarSync empty dSYM file detected, dSYM was created with an executable with no debug info." Steps to Reproduce: Open the project in Xcode 26. Build the project for a physical iOS device (arm64) or Archive the project. The warning appears during the "Generate dSYM" phase of the build process. Troubleshooting Steps Already Taken (Issue Persists): Set 'Enable Debug Dylib Support' to No. Verified 'Debug Information Format' is set to 'DWARF with dSYM File'. Verified 'Generate Debug Symbols' is set to Yes. Set 'Strip Debug Symbols During Copy' and 'Strip Linked Product' to No. Performed 'Clean Build Folder' and manually deleted the DerivedData folder. The issue persists regardless of these standard configuration fixes. Expected Result: Xcode should generate a populated dSYM file containing the debug symbols from the executable. Actual Result: An empty dSYM file is generated, making it impossible to symbolicate crash reports.

I’m working on a product that includes TLS inspection capability. TLS inspection using a local MitM requires installing a trusted root certificate which is then used to create masquerade certificates to intercept and forward TLS traffic through the proxy. For manual installation the end user is required to authenticate as an administrator to modify the trust settings on our internal CA’s root certificate. My question concerns the options for enterprise deployment using an MDM. We want the generated root certificate to be unique to each endpoint so that if a private key is compromised it can’t be used to intercept traffic anywhere else. We can install a “certificate trust” configuration profile from the MDM but this requires a base64 encoded string of the root certificate. In effect the MDM needs to obtain the certificate from the endpoint and then send it back in the form of a configuration profile. I’m not aware that MDMs like Jamf can be configured to do this directly so we’re looking for any other mechanism to have macOS trust a locally generated certificate via MDM based on some non endpoint-unique criteria? One option might be to use an external CA with a trusted certificate to sign an intermediate endpoint certificate but this creates a significant risk if the external trusted certificate were ever compromised. Is this a common industry practice? So my question remains is there a better way to trust our per endpoint root certificate via MDM without needing to install a unique per endpoint configuration profile?

Hello, I am facing a rejection under Guideline 4.3(a) - Spam for "duplicate apps". However, this submission is an update of an existing app (same bundle identifier), not a new app. The update only includes a company rebranding (name, icon, and screenshots). At the moment, we only have one app with this functionality available on the App Store, and we are not intentionally distributing multiple apps targeting the same users or storefronts. The review team mentioned that the app duplicates another app we submitted, but we are unable to identify which app they are referring to. Has anyone experienced a similar issue where Apple flagged a duplicate app even though only one app is live? How did you resolve it? Any guidance would be greatly appreciated.

I’m trying to build a persistent world map of my college campus using ARKit, but it’s not very reliable. Anchors don’t consistently appear in the same place across sessions. I’ve tried using image anchors, but they didn’t improve accuracy much. How can I create a stable world map for a larger area and reliably relocalize anchors? Are there better approaches or recommended resources for this?

NavigationTitle does not change when the app language changes. It works well in iOS 17.5 but does not in iOS 18.x

Hi, I’m working on a real-time head/face tracking pipeline using a standard 2D RGB camera, and I’m trying to better understand how ARKit achieves such stable and responsive results in comparable conditions. To clarify upfront: I’m specifically interested in RGB-only tracking and the underlying vision/ML pipeline. I’m not using TrueDepth or any depth/IR-based sensors, and I’d like to understand how similar stability and responsiveness can be achieved under those constraints. In my current setup, I estimate head pose from RGB frames (facial landmarks + PnP) and apply temporal filtering (e.g., exponential smoothing and Kalman filtering). This significantly reduces jitter, but introduces noticeable latency, especially during faster head movements. What stands out in ARKit is that it appears to maintain both: Very low jitter Very low perceived latency even when operating with camera input alone. I’m trying to understand what techniques might contribute to this behavior. In particular: Does ARKit use predictive tracking (e.g., velocity or acceleration-based pose extrapolation) to compensate for camera and processing delays in RGB-only scenarios? Are there recommended strategies for balancing temporal smoothing and responsiveness without introducing visible lag in camera-based pose estimation pipelines? Is the tracking pipeline internally decoupled from rendering (e.g., asynchronous processing with prediction applied at render time)? Are there general best practices for minimizing end-to-end latency in vision-based head tracking systems beyond standard filtering approaches? I understand that implementation details may not be public, but any high-level insights or pointers would be greatly appreciated. Thanks!

Dear Sir/Madam, Thank you for your support. I have reviewed the documentation for Local Push Connectivity (see URL below) and, following the instruction in the "Important" section to "Request this entitlement from the Entitlement Request Page," I completed the application process for this Entitlement on March 11, 2026. [Local push connectivity] https://developer.apple.com/documentation/networkextension/local-push-connectivity?language=objc#Supporting-APNs-and-local-push-connectivity-in-one-app Subsequently, on March 13, 2026, I received the following reply from Apple: Sub : Re: Requesting Network Extension App Push Entitlement From: Local Push Review Sent: Friday, March 13, 2026 4:09 AM Hi, Thank you for your interest in the Local Push Connectivity entitlement. Your entitlement request has been approved for: Team ID: NWKYYYYYYY Technical documentation on this API is available here: -(Omission) - Best Regards, Apple Developer Relations My understanding is that upon approval of this application, an "Entitlements" field should be added to the input fields for creating provisioning profiles. However, as of today(March 18, 2026), it has not yet been added. Will the Entitlements field be added if I simply wait? My account (Apple ID), which submitted the application, belongs to three Team IDs. For convenience, I will refer to them as Team ID SV3XXXXXXX, Team ID NWKYYYYYYY, and Team ID WEJZZZZZZZ. The application status for Entitlements for each Team ID is as follows: Team ID SV3XXXXXXX Entitlements: Present. Applied for Entitlements on February 6, 2021. (Received "Re: Requesting Network Extension App Push Entitlement" email on February 6, 2021) Team ID NWKYYYYYYY Entitlements: Not present. Applied for Entitlements on March 13, 2026. (Received "Re: Requesting Network Extension App Push Entitlement" email on March 13, 2026) Team ID WEJZZZZZZZ Entitlements: Present. No record (email) of applying for Entitlements. Because of this, I am concerned that the Entitlements applied for Team ID NWKYYYYYYY may have been mistakenly granted to Team ID WEJZZZZZZZ, and I am inquiring about this. Will the Entitlements field for Team ID NWKYYYYYYY be added if I simply wait? Thank you in advance.

Hello, I enrolled in the Apple Developer Program on March 22, 2026 and the payment has already been successfully charged. I also received an invoice the next day (March 23, 2026). However, my account is still not activated, and the system continues to prompt me to complete the enrollment or make the payment again. Is this a normal delay in activation? How long does it usually take for the account to be activated after payment? Do I need to take any additional steps, or should I contact support directly? Thank you for your assistance.

Hi, I do have a strange behavior in my development environment on a Mac mini (M4) running 26.2 and Xcode 26.3. Everything was working as expected. My project had a stable state and I wanted to enable iCloud support. As result I could not run the app any more because code signing failed with the message that my profile does not include the above entitlement. On my notebook (M2) with XCode 26.3 everything is working. Im am using GIT and both computers have identical code. The code compiling and running on my notebook will not run any more on my Max mini. Any help to find what might have broken the code signing and how it could be fixed? Thanks in advance.

I'm based in Australia, and am having the following issue. After leaving this message I received another response from someone else who is also havign the same issue, I've pasted that too. I'm quite surprised to not see it mentioned, could be local to language settings or something. Here is the issue: Folk, I am having an issue where Xcode 26.3 with the new iOS26.2+26.3.1 Simulator update installed doesn’t render Unicode characters in the Canvas or in Simulator. They do render when running direct to a device. I’ve reset devices inside Simulator, cleared Derived Data, cleaned Build Folders etc but to no avail! Is anyone else seeing this, I can’t find a mention anywhere!! Thank you in advance. Yep. Same here. Can't see emojis on the emoji picker keyboard.

I enrolled in the Apple Developer Program about 7 days ago, but my account is still showing as “Pending,” and I haven’t received any updates yet. I’ve already contacted Apple Developer Support via email, but I haven’t heard back so far. I wanted to check if this waiting period is typical, or if I should take any additional steps to complete the enrollment process. Has anyone experienced a similar delay recently? Any guidance on the usual approval timeline would be appreciated.