Spotify was free for Android and iOS, since the day it was announced. But Spotify has now announced the Windows Phone application, and is offering users AD-SUPPORTED streaming to users, at no cost.
The application will be practically the same as the one seen on Android and iOS, letting users stream playlists and music. Spotify users can still choose to subscribe to the ad-free premium service.
There are many improvements in the application, so definitely go ahead and check it out!
Get Spotify for Windows Phone 8 and 8.1 here.