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OuterTune vs Umihi Music: catalog facts
OuterTune	Umihi Music
Free Free and open source under the GPL-3.0 licence.	Free Free and open source under the GPL 3.0.
Android	Android
Local files and YouTube Music in one player Song downloads for offline playback	Plays YouTube and YouTube Music playlists Lightweight Material Design interface
Unofficial YouTube Music client that can break when the service changes Android only	Unofficial client that depends on YouTube's service Android only
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-or-later	License: GPL-3.0-only
Not stated if an account is needed	Not stated if an account is needed
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.