Was a so-so app, but recent changes make it roundly poor. Recent version change wiped out playlists I have worked hard on for years. I thought it was an unfortunate accident, but it was deliberate. My offline lists consist of music bought on Amazon, converted from CDs and downloaded Amazon Prime. Where I used to be able to combine these sources on playlists, they now prevent me from adding the CD music. I guess if it isn't bought through them, they don't want you enjoying it. Cheap #@$/*!!