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Metiq vs Endel: catalog facts
Metiq	Endel
Free Free and open source under the GPL.	Paid Offered with a trial; see the site for current subscription prices.
Android	Windows, Android, iOS
Several noise colors plus binaural beats and ambient sounds Very simple tap-and-listen interface	Sound adapts to time, weather, heart rate and location Separate modes for focus, relaxation, sleep and activity
Android only No releases published on GitHub; install through F-Droid	Effectiveness claims come largely from the company's own research Closed source commercial service
Downloadable app	Downloadable app
Open source	Closed source
License: GPL-3.0-or-later	License not stated
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.