How to use it

1. Press “Start the tuner” and allow access to the microphone.
2. Play one string at a time and let it ring.
3. If the needle is on the left the string is flat: tighten it a little. If it is on the right it is sharp: loosen it.
4. When the note turns green, the string is in tune. Move on to the next one.

Standard tuning

From the sixth string (the lowest) to the first: E2 82.41 Hz, A2 110 Hz, D3 146.83 Hz, G3 196 Hz, B3 246.94 Hz, E4 329.63 Hz. Click a string to hear its note.