Android 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. The Android source code is released in an open-source format to help advance open standards across mobile devices.
Apple (AAPL) iOS is the operating system for iPhone, iPad, and other Apple mobile devices. Based on Mac OS, the operating system which runs Apple's line of Mac desktop and laptop computers, Apple iOS is designed for easy, seamless networking between a range of Apple products. IOS is a mobile operating system for Apple-manufactured devices. iOS runs on the iPhone, iPad, iPod Touch and Apple TV.