Written In:C, C++, Objective-C, Swift, assembly language
OS FamilyUnix-like, based on Darwin (BSD), macOS
iOS (formerly iPhone OS) is a mobile operating system created and developed by Apple Inc. exclusively for its hardware.
IOS is a mobile operating system for Apple-manufactured devices. iOS runs on the iPhone, iPad, iPod Touch and Apple TV. iOS is best known for serving as the underlying software that allows iPhone users to interact with their phones using gestures such as swiping, tapping and pinching.
It tracks every location, Its performance is more customizable than you think, It can work without a power button, You can close more than one app at a time.
Apple's closed ecosystem makes for a tighter integration, which is why iPhones don't need super powerful specs to match the high-end Android phones. It's all in the optimization between hardware and software.Generally, though, iOS devices are faster and smoother than most Android phones at comparable price ranges.