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SimpMusic vs Musify: catalog facts
SimpMusic	Musify
Free Free and open source under the GPL-3.0 licence.	Free Free, ad-free and open source under the GPL 3.0 licence.
Android	Android
Ad-free background playback of YouTube Music Browse charts, podcasts and moods and genres	No ads Offline listening and data import/export
Unofficial client that depends on YouTube Music data May break when YouTube changes its service	Android only Not available from the Google Play Store
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-only	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	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.