HarmoniKeys

Jixter

About this app

HarmoniKeys helps pianists find the best chord voicings with minimal finger movement.

Enter a chord progression, choose your starting position, and the app calculates the optimal inversions for smooth voice leading — keeping common notes and minimizing hand displacement.

Features:
• Visual piano keyboard with fingering numbers
• Left hand / Right hand fingering modes
• MIDI piano sound with real SoundFont
• Metronome with adjustable tempo (40-200 BPM)
• Loop playback for practice
• Preset progressions (Canon, Blues, Jazz ii-V-I, Pop, Andalusian cadence...)
• Save your own chord progressions
• All chord types: Major, Minor, Dim, Aug, Sus2, Sus4, 7th, Maj7, m7, dim7, add9, add11...
• Highlighted optimal position (dark green) and alternatives (light green)
• Special note (7th/6th) shown in blue

100% offline — no ads, no data collection.

What’s new

First production release! Practice piano chord progressions with optimal voice leading. Features: 150+ chords, multiple progressions, built-in piano with realistic sound.