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SoundAura vs Ambio: catalog facts
SoundAura	Ambio
Free Free and open source under the Apache 2.0 licence.	Free Free and open source under the MIT licence.
Android	Android
Plays many tracks at once with individual volume Small download since no sounds are bundled	Mix up to three ambient sounds with separate volume levels Pomodoro presets built in
No built-in sounds; you must supply your own files Android only	Android only Sound library limited to twelve sounds
Downloadable app	Downloadable app
Open source	Open source
License: Apache-2.0	License: MIT
Not stated if an account is 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

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.