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Neutron Music Player vs Symfonium: catalog facts
Neutron Music Player	Symfonium
Paid Paid app.	Paid One-time purchase with a free trial on Google Play; no subscription.
Android, iOS	Android
High-resolution 32/64-bit audio engine Aimed at high-resolution music libraries	Connects to many self-hosted media servers Hi-Res, DSD and USB DAC output with AutoEQ
Paid app Technical interface with many settings	Android only Paid after the trial
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
No account needed	Not stated if an account is needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked September 23, 2026

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