What is Apple iOS ?

 Apple iOS is a proprietary mobile operating system that runs on mobile devices such as the iPhone, iPad and iPod Touch.

Previously iPhone OS, Apple's iOS is the company's own mobile operating system developed and originally released on the Apple iPhone and the Apple iPod Touch back in 2007.

Several years later it was renamed to iOS and was extended to support other Apple devices such as the iPad, 4th Generation Apple TV and the Apple HomePod.

Apple iOS is based on the Mac OS X operating system for desktop and laptop computers. The iOS developer kit provides tools that allow for iOS app development.

Unlike Google's Android and Microsoft's Windows Phone, Apple does not license iOS to other manufacturers and it is the sole maker and seller of iOS devices.

Designed for use with Apple's multitouch devices, the mobile OS supports input through direct manipulation. The system responds to various user gestures, such as pinching, tapping and swiping.

Apple iOS stands for iPhone operating system.