Create innovative applications for iPad with iPhone SDK 4 and a range of technical resources and information.

iPhone SDK 4
iPhone SDK 4 includes a complete set of development tools for creating applications for iPad, iPhone, and iPod touch, including the Xcode IDE, iPhone Simulator, Instruments, Interface Builder, and more.
Download the iPhone SDK from the iPhone Dev Center


iPad Programming Guide
The iPad Programming Guide explains how to implement the new features of iPad in your application. Learn more

iPad Sample Code
Each sample code project is buildable and provides an example of how to accomplish a task for a specific technology. View Sample Code

iPad Human Interface Guidelines
Design an incredible user interface and user experience for your iPad application by following the iPad Human Interface Guidelines. Learn more

Creating Universal Applications
Learn how take full advantage of the technologies on iPad, iPhone, and iPod touch with a single binary. Learn more

Test and Distribute Your iPad App
Join the iPhone Developer Program and gain access to a complete and integrated process for developing and distributing applications for iPad, iPhone, and iPod touch.