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Harmony Music vs Metrolist: catalog facts
Harmony Music	Metrolist
Free Free to download and use.	Free Free and open source.
Windows, Linux, Android	Android
No login or Google account needed No ads while streaming	No ads during playback Offline caching of songs
Depends on YouTube Music, which can break unofficial clients Not available in the official Google Play store	Android only Unofficial client that depends on YouTube Music continuing to work with it
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: GPL-3.0
No account needed	No account needed
Not stated if it 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.