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fre:ac vs Switch Audio File Converter: catalog facts
fre:ac	Switch Audio File Converter
Free Free to use; the project accepts donations.	Freemium Free for non-commercial use; commercial use requires a paid licence.
Windows, macOS, Linux	Windows, macOS, Android
Wide range of input and output formats Converts whole libraries and keeps folder structure	Batch conversion of many files at once Wide range of input and output formats, including dictation formats
Releases are infrequent Interface is functional rather than modern	Free version limited to non-commercial use Closed source
Downloadable app	Downloadable app
Open source	Closed source
License not stated	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 23, 2026	Official website Full listing and sources Checked October 1, 2026

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