Updated: 02/01/2021 by Computer Hope

IOS may refer to any of the following:

iOS 10 logo

1. Originally known as the iPhone OS, iOS is the operating system that runs on the Apple iPhone, Apple iPad, and Apple iPad Touch devices. It was introduced by Steve Jobs during the 2007 WWDC (Worldwide Developer Conference) introducing the iPhone. iOS is the second-most popular platform for mobile devices, only slightly edged out by Android.


iOS is only used on Apple iPads, iPhones, and iPods. Apple desktop and laptop computers run macOS, and the Apple Watch runs WatchOS.

2. Short for Input/Output Supervisor, IOS is a program developed by Microsoft that watches over the interaction of the file system and computer drivers.

3. Short for Internetworking operating system, IOS was developed by Cisco and is used to manage and control network routers, switches, and other network devices.

Android, Apple terms, CLI, Computer acronyms, Operating system terms, Phone terms, tvOS, Ubuntu Touch, WWDC