Guitar Fretboard

This is the app to find a tone name on the guitar fretboard.
Corresponds to the location of buttons arranged vertically and horizontally on the fretboard.
Press the button and string, fret, the tone name output, sound name is displayed.
From the menu button LowFrets (open string,1 fret ~ 5) HighFrets (6 ~ 12 frets) of Screen can be switched.