iOS
What is iOS
iOS (or iPhone OS) is a mobile operating system, created by Apple in 2007 and used exclusively by its devices.
It is the second most popular device operating system worldwide. Originally designed for the iPhone, it has since been extended to support other Apple mobile devices, such as the iPad and iPod.
iOS allows Apple’s users to interact with their devices via a multi-touch interface. iOS apps can be developed in Objective-C and Swift.
The advantages of iOS are its high security, its low fragmentation, and the quality of the user interface.