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Soothing Noise Player vs Drift: catalog facts
Soothing Noise Player	Drift
Free Free and open source under GPL-3.0-only.	Free Free and open source, with no ads.
Android	Android
Mix 15 noises at individual volumes Import custom sounds and save profiles	Independent volume for each sound layer Sleep timer that fades audio out
Small single-purpose app Limited default sound library	Android only Limited to the bundled sound library
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-only	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

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