IOS



"There's an app for that."

Apple's iOS (formerly "iPhone OS") is the operating system that powers their iPhones, iPods, and iPads. It is derived from OS X, but applications are not compatible between the two, and no emulators capable of running commerical apps have been released yet.

iOS is much more locked down than rival Android, and its app store is much more restrictive (emulators are a big no-no, as is anything not permitted by Apple). Through a process called jailbreaking, you can remove all of these restrictions and do anything you want with iOS- including installing emulators and apps that have been rejected from the App Store.