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Chordify vs Fretboard: catalog facts
Chordify	Fretboard
Freemium Pricing details could not be confirmed; see the official website.	Free Free and open source under the GPL-3.0-or-later licence.
Web	Linux
Detects chords automatically from a song Useful for practising and playing along	Look up chords by name or by plotting them on the neck Shows alternative fingerings and barre chords
Automatic chord detection can make mistakes Features and pricing not confirmed here	Guitar only Linux only
Web application	Downloadable app
Closed source	Open source
License not stated	License: GPL-3.0-or-later
Not stated if an account is needed	No account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 26, 2026	Official website Full listing and sources Checked October 1, 2026

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