IPadOS 13 in the context of Mobile operating system

iPadOS is a mobile operating system developed by Apple for its iPad line of tablet computers. It was given a name distinct from iOS, the operating system used by Apple's iPhones, to reflect the diverging features of the two product lines, such as multitasking. It was introduced as iPadOS 13, reflecting its status as the successor to iOS 12 for the iPad, and first released to the public on September 24, 2019. Major versions of iPadOS are released annually; the current stable version, iPadOS 26.1, was released to the public on November 3, 2025.

iOS 12 is the twelfth major release of the iOS mobile operating system developed by Apple. Aesthetically similar to its predecessor, iOS 11, it focuses more on performance than on new features, quality improvements and security updates. Announced at the company's Worldwide Developers Conference on June 4, 2018, iOS 12 was released to the public on September 17, 2018. It was succeeded for the iPhone and iPod Touch by iOS 13 on September 19, 2019, and for the iPad by iPadOS 13 on September 24, 2019. Security updates for iOS 12 continued for four years after the releases of iOS 13 and iPadOS 13 for devices unable to run the newer versions. The last update, 12.5.7, was released on January 23, 2023.

iOS 13 is the thirteenth major release of the iOS mobile operating system developed by Apple for the iPhone, iPod Touch and HomePod. The successor to iOS 12, it was announced at the company's Worldwide Developers Conference (WWDC) on June 3, 2019, and released on September 19, 2019. It was succeeded by iOS 14, released on September 16, 2020.

As of iOS 13, the iPad lines run a separate operating system, derived from iOS, named iPadOS. Both iPadOS 13 and iOS 13 drop support for devices with less than 2 GB of RAM.