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

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