How do I unsubscribe from Radio FM Premium?

If you subscribed to Radio FM Premium using your iOS device, you'll need to unsubscribe through Apple. 
Likewise, if you subscribed using your Android device, you’ll need to unsubscribe through Google Play.
 All app subscriptions are controlled by their respective app stores (i.e., iTunes App Store or Google Play).

For directions on how to unsubscribe through Apple, please read this Apple FAQ.
For directions on how to unsubscribe through Google Play, please visit this Google FAQ.