How to use:

• Set your desired A4 reference frequency (430-450 Hz) using the +/- buttons.
• Click "Start Tuner" and allow microphone access if prompted.
• Play a string on your violin. The gauge will indicate if you are sharp, flat, or in tune for the closest G,D,A,E note.
• Click a string name (G3, D4, A4, E5) to start its reference tone. Click again to stop.
• The indicators for G, D, A, E will highlight the currently playing reference tone or the note the tuner is detecting.
• Click "Stop Tuner" when finished.