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MetroMusic vs Rhythm: catalog facts
MetroMusic	Rhythm
Free Free and open source under GPL-3.0.	Free Free and open source under the GPL, with no ads.
Android	Android
Plays music stored on the device Decodes Apple Lossless in the app	Material 3 Expressive interface Plays local files and streams
Android only F-Droid and release APKs use different signing keys	Android only Young project that changes quickly
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License: GPL-3.0-only
Not stated if an account is needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 8, 2026	Official website Full listing and sources Checked October 2, 2026

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