Polishing your App: Tips and Tricks to Improve Responsiveness and Performance

It's easy to write an app for iOS, however writing a great app takes effort. iOS Engineers will show you how to improve your app's responsiveness and performance, while polishing the overall user experience. Discover new techniques for saving your app's state, starting quickly on cold launch, improving user awareness by utilizing animations, and working efficiently with network resources and GCD.

WWDC 2011 - iOS