Tonica - Harmonic training

Tonica is an app for harmony training. With simple operations, you can efficiently practice singing and instruments. Features: * 5-octave keyboard * Reference pitch selection from A=410-463Hz * Tuning options: Equal temperament, Just intonation major, Just intonation minor * One-touch chord playback * Sustain function that keeps notes playing even after lifting fingers from the keyboard * Transposition function * Metronome function