Spotify Apps according to Spotify themselves
“Spotify Apps are a bunch of exciting and integrated apps inside Spotify, created by some of the best and brightest brands in the world. Each glorious app brings you new music experiences built around your music tastes. Enjoy the ride!
Spotify is the award-winning music service that gives you free and instant access to millions of tracks. Sign up now to enjoy our unrivalled free service.
For more information head over to: http://www.spotify.com/apps/“