The chord sheet companion for musicians who value privacy and simplicity.
Coming SoonmacOS · Windows · Linux
Inline Chorded Lyrics Format (ICLF) — open standard for chord sheets
Guitar, 7-string guitar, ukulele, bass, banjo, mandolin, and custom tunings. Interactive fretboard with voicings across difficulty levels.
ChordPro, inline brackets, Ultimate Guitar — import chord sheets from any major format into clean ICLF.
Every chord type, color-coded by root note. Tap frets to identify any chord. Voicing calculator for any instrument.
Auto-scroll at adjustable tempo. Common chord progressions library in any key. Built to help you play.
ICLF editor with syntax highlighting and live preview. Dual-panel chord editor with syllable-precise alignment.
English, Portuguese, Spanish, French, German, and Italian. Built for musicians everywhere.
Your music stays on your device. Chordo works completely offline — no accounts, no analytics, no cloud. Ever.
Chordo's core libraries are open-source and MIT-licensed.
iclf-standard
The ICLF specification — an open plain-text format for chord sheets with precise alignment.
CC BY 4.0
iclf-parser
Dart library that parses, validates, and auto-corrects ICLF files into structured data.
Dart · MIT
music-theory
Programmatic music theory — chords, scales, voicings, key detection, transposition.
Dart · MIT