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Switch Audio File Converter vs SoX: catalog facts
Switch Audio File Converter	SoX
Freemium Free for non-commercial use; commercial use requires a paid licence.	Free Free and open source under GPL-2.0 and LGPL licences.
Windows, macOS, Android	Windows, macOS, Linux, Command line
Batch conversion of many files at once Wide range of input and output formats, including dictation formats	Converts between many audio file formats Applies effects and filters during conversion
Free version limited to non-commercial use Closed source	Command line only, with no graphical interface Infrequent releases
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: GPL-2.0-or-later AND LGPL-2.1-or-later
Not stated if an account is needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 1, 2026

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