C#,ASP.NET, Perl,Java, PHP5 is the foundation of iPhone, iPad, and iPod touch. Derived from core OS X technologies, the amazing user experience of iOS has been streamlined to take maximum advantage of iPhone, iPad, and iPod touch hardware.
IOS also delivers a wide-range of graphics capabilities, such as comprehensive 2D drawing, accelerated 3D rendering, and direct access to video playback and capture. Using high-level frameworks. IOS is also cuming with number of powerful , innovative and attractive features such as Siri which uses voices to send messages and icloud.