IOS is the operating system that presently powers many of the company’s mobile devices, including the iPhone, iPad, and iPod Touch. IOS has been created mainly for business purposes.
IOS provides user friendly and intuitive interface. Its based upon direct manipulation, using multi-touch gestures. Interface control elements consist of sliders, switches, and buttons. Interaction with the OS includes gestures such as swipe, tap, pinch, and reverse pinch, all of which have specific definitions within the context of the iOS operating system and its multi-touch interface.
Apple allows apps on the iPhone to be installed from only one source, their app store. This not only prevents, but completely removes any chance of tampering by third party (malicious) apps.