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Free M4a to MP3 Converter vs fre:ac: catalog facts
Free M4a to MP3 Converter	fre:ac
Free Freeware with no charge.	Free Free to use; the project accepts donations.
Windows	Windows, macOS, Linux
Handles M4b audiobooks and other rarer MPEG-4 audio formats Converts whole folders including subfolders	Wide range of input and output formats Converts whole libraries and keeps folder structure
Windows only Output limited to MP3 and WAV	Releases are infrequent Interface is functional rather than modern
Downloadable app	Downloadable app
Closed source	Open source
License: Freeware	License not stated
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked September 23, 2026

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