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Forest vs Ambio: catalog facts
Forest	Ambio
Freemium Free to start, with paid plans for more features.	Free Free and open source under the MIT licence.
Android, iOS, Browser extension	Android
Simple game mechanic that discourages switching apps Visual history of your focus sessions	Mix up to three ambient sounds with separate volume levels Pomodoro presets built in
Mobile only Some features require a paid plan	Android only Sound library limited to twelve sounds
Downloadable app, Browser extension	Downloadable app
Closed source	Open source
License not stated	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 September 23, 2026	Official website Full listing and sources Checked October 2, 2026

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