iTunes Radio was an Internet radio service by Apple Inc. that let users listen to automatically generated playlists based on direct input as well as collected data on music preferences. It was launched on September 18, 2013, as part of iOS 7 and was available in the Music app on iOS devices and Apple TV (2nd generation and newer) as well as in iTunes 11.1 on OS X (10.7 Lion; it requires Mac OS 10.7.5 or newer to run) and Windows. It was only available in the United States and Australia.