iOS version history

iOS is a mobile operating system developed by Apple Inc. and was first released as iPhone OS in June 2007, coinciding with the launch of the first generation iPhone.^[1] iPhone OS was renamed iOS following the release of the iPad, starting with iOS 4.^[2] With iOS 13, Apple began offering a separate operating system, iPadOS, for the iPad. iOS is also the foundation of the newer audioOS and tvOS, and shares some of its code with macOS. New iOS versions are released every year alongside new iPhone models. From its launch in 2007 until 2010, this occurred in June or July, since then, new major versions are released in September or October. Since the launch of the iPhone in June 2007, there have been 17 major releases of iOS. The current major version of iOS is iOS 17, released on September 18, 2023.