What you need for this book

This book assumes that you have an Intel-based Macintosh running Snow Leopard (Mac OS X 10.6.2, or later). You can use Leopard, but I would highly recommend upgrading to Snow Leopard or Lion, as there are many new features in Xcode that are available only to these two operating systems.

We will be using Xcode 4.2.1, which is the integrated development environment used for creating applications for iOS development. You can download the latest version of Xcode at the following link: http://developer.apple.com/xcode/.