Everyone is developing iPhone applications, and it's clear why. The iPhone is the coolest mobile device available, and the App Store makes it simple to get an application out into the unstoppable iPhone app market. With hundreds of thousands of app developers entering the game, it's crucial to learn from those who have actually succeeded. This book shows you how some of the most innovative and creative iPhone application developers have developed cool, best-selling apps. Not only does every successful application have a story, but behind every great app is excellent code. In this book, you'll see the code and learn how to use it to make your own cool applications. You'll learn everything from how Joost works to the Unity game engine, from the mathematics of visual processing to the latest Flash and iPhone projects. This book shares the secrets of the coolest iPhone apps being built today by the best iPhone developers-invaluable knowledge for anyone who wants to create the app that everyone is talking about.What you'll learn* Game development with Unity and iPhone OpenGL* Unit testing and iPhone-specific testing tools * How to approach and solve complex app development roadblocks* The best code fully explained and presented with screenshotsWho this book is for iPhone application developers of all experience levels and development platforms