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Classical Music Tagger vs Kid3: catalog facts
Classical Music Tagger	Kid3
Free Free and open source under GPL-3.0-only.	Free Free and open source. Hosting, hardware and any external services are separate.
Android	Windows, macOS, Linux, Android
Supports classical music fields such as works and conductors Can run standalone with a file browser	Supports multiple audio tag formats Can rename files using tag information
Android only Focused on classical music metadata	Tagging changes metadata rather than repairing the audio itself.
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-only	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 8, 2026	Official website Full listing and sources Checked September 22, 2026

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