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The right chord voicings, effortlessly

Find the best transitions between chords with optimal voice leading, calculated automatically. The essential tool for pianists and musicians.

4.99 EUR - One-time purchase

A tool designed for musicians

Simple, precise and effective

🎹

Optimal voice leading

The algorithm finds the best position for each chord with minimum finger movement between voicings.

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Full chord library

19 chord types: major, minor, 7th, 6th, add, sus, diminished, augmented.

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Right or left hand

Proper fingerings for each hand, from triads to four-note chords.

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Inversions and positions

Pick your starting position: root, 1st or 2nd inversion.

Playback with metronome

Hear your progressions at your tempo (40-200 BPM), with metronome and loop mode.

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Ready-to-play presets

Canon, Blues, Jazz, Pop... load a classic progression in one tap and start playing.

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Save and share

Save your own progressions and share them with students or fellow musicians via QR code.

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English or solfège notation

Display notes as C-D-E or Do-Re-Mi, whichever you prefer.

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100% offline

No account, no connection required. The app works anywhere, anytime.

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One-time purchase

4.99 EUR once. No subscription, no hidden in-app purchases.

Discover the app

Main keyboard

Keyboard and chords

Chord selection

Chord selection

Voice leading

Voice leading

Settings

Settings

Ready to improve your chord progressions?

Download HarmoniKeys and discover optimal voice leading for your chords.