The free Spotify app, which was given approval by Apple at the end of last month, can only be used by Spotify 'Premium' users that pay a £10 monthly subscription. The subscription also allows users to stream songs without listening to the ads that users of the free service hear. The app can be downloaded from the iTunes app store.
The app lets users search and stream Spotify's catalogue of millions of tracks and any changes made to playlists from the phone will be instantly synched with your PC's desktop application and vice versa. If playlists have been downloaded, they can also be played when there is no web connection.
"We've worked hard to bring you the same great Spotify experience you’re already familiar with to your phone. The mobile apps will allow you to take the entire Spotify catalogue and put it in your pocket. You can use our 'offline mode’ to make playlists available at all times, even when no connection is available," said Andrew Sehr from Spotify.
Mobile phone users with handsets running Google's Android can also download Spotify's official app from Android Market. The launch of the official app comes just weeks after an unofficial app, Droidify, was pulled from the Android Market because it infringed Spotify's deal with record labels.
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See also: SaveSpotify isn't an official add-on