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Symfonium vs Auxio: catalog facts
Symfonium	Auxio
Paid One-time purchase with a free trial on Google Play; no subscription.	Free Free and open source, supported by donations.
Android	Android
Connects to many self-hosted media servers Hi-Res, DSD and USB DAC output with AutoEQ	Plays local files with no streaming account Simple, focused interface
Android only Paid after the trial	Android only No streaming service integration
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: GPL-3.0
Not stated if an account is needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

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