iTunes ( or ) is a media player, media library, online radio broadcaster, and mobile device management application developed by Apple Inc. It is used to play, download, and organize digital downloads of music and video (as well as other types of media available on the iTunes Store) on personal computers running the macOS and Microsoft Windows operating systems. The iTunes Store is also available on the iPhone, iPad, and iPod Touch. 

Through the iTunes Store, users can purchase and download music, music videos, television shows, audiobooks, podcasts, movies, and movie rentals (in some countries), available on the iPhone and iPod Touch (fourth generation onward). Application software for the iPhone, iPad and iPod Touch can be downloaded from the App Store. iTunes 12.5 is the most recent major version of iTunes, available for Mac OS X v10.9.5 or later and Windows 7 or later; it was released on September 13, 2016. iTunes 12.2 added Apple Music to the application, along with the Beats 1 radio station, and iTunes 12.5 offers a refinement of the Apple Music interface. 

On May 11, 2017, Microsoft announced that iTunes would be coming to the Windows Store by the end of the year. 

In the latest version of iTunes released on September 12, 2017 (iTunes 12.7), Apple removed the App Store and Ringtone section of the software. iTunes U was also merged with the podcasts section.
can you get ringtones?
Apple removed the App Store and Ringtone section of the software