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Kopuz vs Symfonium: catalog facts
Kopuz	Symfonium
Free Free and open source under the EUPL-1.2, supported by sponsors.	Paid One-time purchase with a free trial on Google Play; no subscription.
Windows, macOS, Linux, Android	Android
Local files and many music services in one library Synced and word-timed lyrics display	Connects to many self-hosted media servers Hi-Res, DSD and USB DAC output with AutoEQ
Apple Music playback only works on desktop Streaming sources need accounts with those services	Android only Paid after the trial
Downloadable app	Downloadable app
Open source	Closed source
License: EUPL-1.2	License not stated
Not stated if an account is needed	Not stated if an account is needed
Works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.