StillTune

StillTune is an app that composes music as you listen, without any pre-set tracks or playlists. It offers four modes: Sleep, Focus, Relax, and Drift for different moods and needs. The music includes notes, chords, and changes designed for relaxation, focus, or winding down, with an option to add noise.

Unlike other apps, StillTune allows you to adjust the music while it's playing and save or publish your customized sound. The app works offline, synthesizing sound on your phone without any streaming or downloading.

Features include a sleep timer, white, pink, and brown noise, rain, wind, waves, fire, thunder, a quiet cafe sounds, a full mixer, and lock screen controls. The Pro version unlocks additional soundscapes, themes, longer timers, and removes ads. No account is needed to use the app.