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TuneFriend vs Tempus: catalog facts
TuneFriend	Tempus
Free Free and open source.	Free Free and open source under GPL 3.0.
Android, Web	Android
Works with many Subsonic-compatible servers Local library sync for fast search	Built natively for Android Works with self-hosted Subsonic libraries
Needs access to an existing music server Background playback may need battery settings changed on Android	Needs a Subsonic-compatible server to be useful Android only
Downloadable app, Web application	Downloadable app
Open source	Open source
License: GPL-3.0-or-later	License: GPL-3.0
Account needed	Not stated if an account is needed
Not stated if it 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.