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Audacity vs iZotope RX: catalog facts
Audacity	iZotope RX
Free Free and open source under GPLv3. The vendor promotes paid plugins through MuseHub, but…	Paid Commercial software sold in several editions.
Windows, macOS, Linux	Windows, macOS
Multi-track recording and editing with a long list of built-in effects Runs on Windows, macOS and Linux with the same project format	Noise removal and dialogue isolation for spoken audio Available as plugins for use inside other audio software
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	Paid, with the full toolset in the higher editions Aimed at professionals rather than casual users
Downloadable app	Downloadable app
Open source	Closed source
License: GPL-3.0	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 September 20, 2026	Official website Full listing and sources Checked September 23, 2026

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