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Drift vs Ambio: catalog facts
Drift	Ambio
Free Free and open source, with no ads.	Free Free and open source under the MIT licence.
Android	Android
Independent volume for each sound layer Sleep timer that fades audio out	Mix up to three ambient sounds with separate volume levels Pomodoro presets built in
Android only Limited to the bundled sound library	Android only Sound library limited to twelve sounds
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License: MIT
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

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