iOS is the operating system for iPhone, iPad, and other Apple mobile devices. Based on Mac OS, the operating system which runs Apple’s line of Mac desktop and laptop computers, Apple iOS is designed for easy, seamless networking between a range of Apple products.
When the iPhone was introduced in 2007, its operating system was originally called "iPhone OS." Despite the name, the iPod Touch (which launched later in 2007) also ran iPhone OS.
iOS Initial release date : 29 June 2007
