The following WWDC videos provide more information about building energy-efficient apps.

2015 WWDC Videos

• WWDC 2015: Achieving All-day Battery Life

• WWDC 2015: Advanced NSOperations

• WWDC 2015: Building Responsive and Efficient Apps with GCD

• WWDC 2015: Debugging Energy Issues

• WWDC 2015: Low Energy, High Performance: Compression and Accelerate

• WWDC 2015: Performance on iOS and watchOS

2014 WWDC Videos

• WWDC 2014: Advanced Graphics and Animations for iOS Apps

• WWDC 2014: Continuous Integration with Xcode 6

• WWDC 2014: Debugging in Xcode 6

• WWDC 2014: Fix Bugs Faster Using Activity Tracing

• WWDC 2014: Improving Your App with Instruments

• WWDC 2014: Power, Performance, and Diagnostics: What’s New in GCD and XPC

• WWDC 2014: Testing in Xcode 6

• WWDC 2014: Writing Energy Efficient Code, Part 1

• WWDC 2014: Writing Energy Efficient Code, Part 2

2013 WWDC Videos

• WWDC 2013: Energy Best Practices

• WWDC 2013: Power and Performance: Optimizing Your Website for Great Battery Life and Responsive Scrolling

• WWDC 2013: What’s New in Core Location

• WWDC 2013: What’s New in Foundation Networking

2012 WWDC Videos

• WWDC 2012: Asynchronous Design Patterns with Blocks, GCD, and XPC

2011 WWDC Videos

• WWDC 2011: Blocks and Grand Central Dispatch in Practice

• WWDC 2011: Introducing XPC

• WWDC 2011: Mastering Grand Central Dispatch

2010 WWDC Videos

• WWDC 2010: Introducing Blocks and Grand Central Dispatch on iPhone

• WWDC 2010: Simplifying iPhone App Development with Grand Central Dispatch