iTunes is a software program developed by Apple that acts as a media player, media library, mobile device management utility, and the client app for the iTunes Store. It allows users to organize and play their music and video, play or download unlimited songs with Apple Music (with a paid subscription), find music, movies, TV shows, audiobooks, free podcasts, and more in the iTunes Store, and set up their iPhone, iPad, or iPod, and add music, video, and more to it.

The iTunes Store is an online digital media store operated by Apple that allows users to purchase and download items directly to portable Apple devices, such as the iPhone, iPad, Apple TV, and iPod Touch. The store offers a wide range of digital content, including music, movies, TV shows, audiobooks, podcasts, and more.

iTunes also allows users to broadcast online radio and lets them play, download, and organize media players. It is available for both Mac and PC users and can be downloaded for free from the Apple website.