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Symfonium vs K-19 Player: catalog facts
Symfonium	K-19 Player
Paid One-time purchase with a free trial on Google Play; no subscription.	Free Free and open source under GPL-3.0-only.
Android	Android
Connects to many self-hosted media servers Hi-Res, DSD and USB DAC output with AutoEQ	Works with OpenSubsonic-compatible servers Includes background audio
Android only Paid after the trial	Requires an OpenSubsonic-compatible music server
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: GPL-3.0-only
Not stated if an account is needed	Not stated if an account is needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked October 8, 2026

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