If you like drone ambient music, you can turn your phone into endless drone "mix" or "live" generator.
Just turn it on, press Start and listen as a usual player, but music will never end.
Main theme or "track" will change on every 3-4 minutes automatically.
All music is created right on your phone, no streams and samples, so it can work offline without internet connection.
To switch to next track tap Reset button.
To enable full spectre of possible sounds, tap Go Dark button.
To record/stop recording created music tap R icon (recorded WAV files path is Files/EFDrone).
Also it has "mute" feature - tap on gear icon and you can mute chosen instruments and use app as a drone or chords generator, for example.