Paul Hegarty begins with a demonstration of making Concentration's button layout dynamic. He then reviews the first two lectures and continues diving into Swift.

Lecture 3 Slides

Tools and APIs required to build applications for the iPhone and iPad platforms using the iOS SDK. User interface design for mobile devices and unique user interactions using multi-touch technologies. Object-oriented design using model-view-controller paradigm, memory management, Swift programming language. Other topics include: object-oriented database API, animation, mobile device power management, multi-threading, networking and performance considerations.