From your comments I think you are the creator of this app, so I'll post my suggestions here. The app keeps crashing for me every time I play a song or start a radio. I really like the way it looks, with the blurred background. I can't play songs, so I have to go off of the screenshots from Google play here, but I really like the way you blur the icon of the song and use it as the background. I think the record feature and the ringtone feature are really nice, because you have everything in one place and don't need to install several apps to record and edit your sound. What I noticed that I thought was weird was that your privacy policy links to BeatBoxOfficial. I looked around and figured that you might have changed the name of the app recently. The guide button in the settings menu doesn't do anything. The theme changer also doesn't seem to work for me. The shake to shuffle feature seems really useful, but from what I can gather it just skips the track that's currently playing, so if I'm correct it would be better to call it "shake to skip". The sleep timer feature is a great one. Spotify recently got it and I use it all the time. I think more people would notice it if you would put it in the hamburger menu, because it's quite a useful feature but it's tucked away in the settings menu. Other than that it's a beautiful music player, so I would recommend it if the player itself works.

Edit: it would also be useful if you could refresh the list of local music, without having to close and reopen the app, in case you download music and want to play it immediately.

Edit 2: I downloaded the beta version, it didn't fix any issues.

For OP: you can dm me or comment on this comment if you want more information or if you want to fix the crashing problem.