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ViPER4Android vs Equalizer314: catalog facts
ViPER4Android	Equalizer314
Free The open-source software is available without a license fee.	Free Free and open source.
Android	Android
Processes audio from every app, not just one player Convolver supports impulse responses for headphone correction	Parametric EQ using the DynamicsProcessing API Visual feedback while adjusting audio
Requires root and a Magisk module install Configuration is overwhelming and easy to make sound worse with	Still in beta Android only
Downloadable app	Downloadable app
Open 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
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked October 2, 2026

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