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Harmodus Piano: a just intonation piano app
Harmodus Piano is a piano keyboard and metronome app for iPhone, iPad and Android. You can switch between equal temperament and just intonation while playing chords.
iPhone / iPad: App Store · Android: Google Play
The app analyses the chord you hold and applies pure frequency ratios relative to its root. It can be used to compare tuning systems or to provide a chord reference when practising vocal harmony. It does not analyse or correct your singing.
Chord detection, external MIDI keyboard input and a metronome with polyrhythms are included.
Free to download and use basic features. Offers in-app purchases.
Related app: Audire: a MIDI player for choir part practice
Polytactus Metronome: a metronome app for polyrhythms
Harmodus Piano
