Dial in the right key in seconds.
KeyStart plays chords and tones so you can find the perfect start note—fast.
All audio is generated on-device. No tracking.
Chord dial
Snap-to-note, major/minor
Selective tones
Root/Third/Fifth/Octave with checkboxes
Hold or Sequence
Hold-to-play and gapless sequence playback
On-device audio
No data collection, no network
Quick preview. No analytics.