Tuner
Hear a string
Tap a string to hear its pitch; tap it again to stop.
About this tuner
Green is within 5 cents. Single: one note at a time, on the dial. Chord: a double or triple stop, each note with its own readout. Octave stops and unisons are hard for this tuner, and a unison or a minor second shows as one note.
The analysis runs on this device: the sound does not leave it.