iOS PlatformsARMv8-A (iOS 7 and later) ARMv7-A (iPhone OS 3 – iOS 10.3.4) ARMv6 (iPhone OS 1 – iOS 4.2.1)Kernel typeHybrid (XNU)Default user interfaceCocoa Touch (multi-touch, GUI)LicenseProprietary software except for open-source componentsSupport statusiOS – Wikipedia en.wikipedia.org › wiki › IOS