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Tenacity vs Fission: catalog facts
Tenacity	Fission
Free Free and open source under the GPL, developed by volunteers.	Paid Paid app with a free download to try it before purchase.
Windows, macOS, Linux	macOS
No telemetry, no account, and nothing that requires an internet connection Records from real and virtual devices and imports or exports a wide range of formats through FFmpeg	Lossless cutting and trimming of MP3 and AAC Batch conversion between common formats
Development is slow and it trails current Audacity on features Releases are infrequent and built by a small volunteer team	macOS only Not a multitrack or effects-heavy editor
Downloadable app	Downloadable app
Open source	Closed source
License: GPL-2.0	License not stated
No account needed	Not stated if an account is needed
Works offline	Works offline
Official website Full listing and sources Checked September 21, 2026	Official website Full listing and sources Checked September 23, 2026

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