IOS is a mobile operating system developed by Apple that runs on Apple devices like the iPhone, iPad, and iPod Touch. It was originally called iPhone OS but was renamed with the introduction of the iPad. Unlike Android, IOS is not licensed to other hardware manufacturers. Android is an open source operating system based on the Linux kernel that was developed by Android Inc, which was later acquired by Google. It powers many smartphones and tablets from manufacturers like Samsung, LG, and Sony. The interfaces of IOS and Android differ, with IOS focusing on simplicity and fluidity while Android allows for more customization.