← PF Software

Learn. Play. Grow. Keyflow listens to your piano through the microphone and recognises the notes you play in real time — no MIDI cable, with a grand, an upright or a digital keyboard.

Keyflow turns the phone into a piano teacher. Five practice modes, a chord library with fingerings, scales, the circle of fifths and sheet music you can export to PDF. Microphone calibration tunes the app to your instrument and the acoustics of your room.

Keyflow screen: the practice home screen

Practice that does not feel like practice

Melody practice

Play along with songs and get feedback on every note as it happens.

Note finder

Sharpen note recognition in quick rounds that fit into a coffee break.

Chord challenge

Work through chords at every difficulty level, from a first grip to full voicings.

Rhythm hero

Fix your timing in rhythm drills — usually the part that lags longest.

Sight reading

Train reading from the score instead of memorising pieces.

Daily motivation

Streaks, XP and achievements, plus a personal level that reflects real skill.

A complete music toolkit

  • Chord library with hundreds of voicings and fingerings
  • Major, minor and modal scales
  • The circle of fifths — key relationships in one view
  • Sheet music viewer with PDF export
  • Microphone calibration for your instrument and room

Free · iPhone and iPad · requires iOS 17.0 or later