Writing Energy Efficient Apps - WWDC 2017 - Videos - Apple Developer
People expect long battery life on their mobile devices, and apps play a vital role in achieving that experience. Learn strategies to...
Improve performance and battery life in your app - WWDC20 - Apple Developer
Discover four tools that can help you identify performance and battery life issues: Xcode Organizer, the Power and Performance API, MetricKit, and XCTest. Learn how to analyze aggregated power and performance data in Xcode with just a few clicks.