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Whisper Noise vs Metiq: catalog facts
Whisper Noise	Metiq
Free Free and open source under the MIT licence.	Free Free and open source under the GPL.
Android	Android
Several noise types, including white and brown noise No ads or paywall	Several noise colors plus binaural beats and ambient sounds Very simple tap-and-listen interface
Very new project with a short track record Android only	Android only No releases published on GitHub; install through F-Droid
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License: GPL-3.0-or-later
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it 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.