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iZotope RX vs Audacity: catalog facts
iZotope RX	Audacity
Paid Commercial software sold in several editions.	Free Free and open source under GPLv3. The vendor promotes paid plugins through MuseHub, but…
Windows, macOS	Windows, macOS, Linux
Noise removal and dialogue isolation for spoken audio Available as plugins for use inside other audio software	Multi-track recording and editing with a long list of built-in effects Runs on Windows, macOS and Linux with the same project format
Paid, with the full toolset in the higher editions Aimed at professionals rather than casual users	Audacity 4 changed the interface, so most existing tutorials show the old one It is a destructive editor at heart; it is not a multi-track DAW for music production
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
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 20, 2026

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