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
The iPad Programming Guide explains how to implement the new features of iPad in your application. Learn more
Design an incredible user interface and user experience for your iPad application by following the iPad Human Interface Guidelines. Learn more