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Fission vs Audacity: catalog facts
Fission	Audacity
Paid Paid app with a free download to try it before purchase.	Free Free and open source under GPLv3. The vendor promotes paid plugins through MuseHub, but…
macOS	Windows, macOS, Linux
Lossless cutting and trimming of MP3 and AAC Batch conversion between common formats	Multi-track recording and editing with a long list of built-in effects Runs on Windows, macOS and Linux with the same project format
macOS only Not a multitrack or effects-heavy editor	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
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.