iOS Design Kit - The newest library of native iOS templates
Swift Playgrounds - Learn serious code on your iPad in a seriously fun way
iOS Design Course - The Complete iOS Design Course with Sketch from Bitfountain
Code-Free Startup - Learn how to build real apps without coding
Xcode - Xcode is Apple’s powerful integrated development environment for creating great apps for Mac, iPhone, and iPad. Xcode 4 includes the Xcode IDE, instruments, iOS Simulator, and the latest Mac OS X and iOS SDKs.
Swift AI - Artificial intelligence and machine learning library written in Swift.