Microphone
A4 reference
Dot labels
Custom tuning: click a string label on the board to raise it a semitone; shift-click to lower it.
Calibration capture
Records a few seconds of each open string and some chords from your guitar, then saves a file that can be used to tune the detector.
Click anywhere on the board to hear that note. Overlaid dots mark the chosen scale; the ringed dot is the root.
Play a string — I'll tell you which way to turn.
Game
Difficulty
Press play, then match the pitch on your guitar.
exact pitch
same note · higher octave
same note · lower octave
several notes at once · each shown green at its exact pitch
matched
one step away
far · within an octave
an octave or more away