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Noice vs Ambio: catalog facts
Noice	Ambio
Freemium Free to try, with the site promoting a paid offering.	Free Free and open source under the MIT licence.
Android, Web	Android
Mix several sounds with separate volume controls Sleep timer and Chromecast support	Mix up to three ambient sounds with separate volume levels Pomodoro presets built in
Source repository not updated since August 2024 Web version is only a prototype	Android only Sound library limited to twelve sounds
Downloadable app, Web application	Downloadable app
Open source	Open source
License: GPL-3.0	License: MIT
Not stated if an account is needed	No account needed
Not stated if it 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.