Mobile app development is the act or process by which a mobile app is developed for mobile
devices, such as personal digital assistants, enterprise digital assistants or mobile phones
is a mobile operating system based on a modified version of the Linux kernel and other
open source software, designed primarily for touchscreen mobile devices such as smartphones and tablets
iOS is a mobile operating system created and developed by Apple Inc. exclusively for its hardware. It is the operating system that
presently powers many of the company's mobile devices, including the iPhone, and iPod Touch.