Turn on the microphone and play the highlighted note. The green bar fills up while you hold the right note.
Pick a scale and play it up and down. The app listens through the microphone and only moves on when the note is right. Only the scales that fit your instrument are shown: .
Timeline of the last few seconds: the straighter it is in the middle, the steadier the note.
The tuner shows the note you play and whether it's sharp or flat.
Automatic: the tuner figures out the note on its own.
Shortcuts: keys C D E F G A B (or do re mi with the number keys 1–7), R for rest, Backspace deletes. Tap a note on the staff to select it.