


It is proprietary software, although some parts of it are open source under the Apple Public Source License and other licenses.

It is the basis for three other operating systems made by Apple: iPadOS, tvOS, and watchOS. It is the world's second-most widely installed mobile operating system, after Android. It is the operating system that powers many of the company's mobile devices, including the iPhone the term also includes the system software for iPads predating iPadOS-which was introduced in 2019-as well as on the iPod Touch devices-which were discontinued in mid-2022. IOS (formerly iPhone OS ) is a mobile operating system developed by Apple Inc. Songs from the Apple Music catalog cannot be burned to a CD.Proprietary software except for open-source components iTunes-compatible CD or DVD recorder to create audio CDs, MP3 CDs, or backup CDs or DVDs.Internet connection to use Apple Music, the iTunes Store, and iTunes Extras.Screen resolution of 1024x768 or greater 1280x800 or greater is required to play an iTunes LP or iTunes Extras.To play 1080p HD video, a 2.4GHz Intel Core 2 Duo or faster processor, 2GB of RAM, and an Intel GMA X4500HD, ATI Radeon HD 2400, or NVIDIA GeForce 8300 GS or better is required.To play 720p HD video, an iTunes LP, or iTunes Extras, a 2.0GHz Intel Core 2 Duo or faster processor, 1GB of RAM, and an Intel GMA X3000, ATI Radeon X1300, or NVIDIA GeForce 6150 or better is required.To play standard-definition video from the iTunes Store, an Intel Pentium D or faster processor, 512MB of RAM, and a DirectX 9.0–compatible video card is required.PC with a 1GHz Intel or AMD processor with support for SSE2 and 512MB of RAM.
