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Youamp vs Ultrasonic: catalog facts
Youamp	Ultrasonic
Free Free and open source under the MIT licence.	Free Free and open source under the GPL-3.0.
Android	Android
No trackers, ads or analytics Modern Material You interface	Works with Navidrome, Ampache, gonic and other OpenSubsonic servers Multiple server support
Needs a Subsonic-compatible server to be useful Android only	Needs a compatible music server you run or have access to Android only
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License: GPL-3.0
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.