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Drift vs Chroma Doze: catalog facts
Drift	Chroma Doze
Free Free and open source, with no ads.	Free Free and open source under the GPL-3.0 licence.
Android	Android
Independent volume for each sound layer Sleep timer that fades audio out	Draw any noise spectrum by hand Fast feedback while adjusting
Android only Limited to the bundled sound library	Android only Infrequent updates
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License: GPL-3.0-only
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

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