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Virtual Surround vs ViPER4Android: catalog facts
Virtual Surround	ViPER4Android
Free Free and open source under the MIT licence.	Free The open-source software is available without a license fee.
Linux	Android
Toggle without changing the default audio device Accepts custom HRIR WAV presets like HeSuVi	Processes audio from every app, not just one player Convolver supports impulse responses for headphone correction
Requires PipeWire Linux only	Requires root and a Magisk module install Configuration is overwhelming and easy to make sound worse with
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License not stated
No account needed	Not stated if an account is needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked September 22, 2026

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