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Loopback vs SoundSource: catalog facts
Loopback	SoundSource
Paid Requires a paid license or subscription. Trial availability and licensing depend on the…	Paid Paid app with a free download to try it before purchase.
macOS	macOS
Provides a visual audio-routing interface Routes sources into virtual devices for other apps	Per-app volume and output device routing Audio effects and Audio Unit support for any app
Requires a paid license and macOS audio permissions.	macOS only Paid after the trial
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
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 September 23, 2026

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