The complete potential of iPhone, the multimedia gadget, can be utilized by developing ingenious applications for it. The launch of the SDK (software development kit) by Apple in 2008 boosted iPhone application developer worldwide to come up with unique and customized applications for iPhone users.The SDK, also known as the ‘tool chain’ includes: Xcode: It is the integrated development environment (IDE), wherein iPhone applications are developed. It is the integral part of the iPhone application development kit and consists of a graphical debugger and a powerful source editor too. Interface builder: It helps in the designing and testing of user interfaces. The graphical editing environment of the interface builder is utilized by ...