Guitar Helper is a tool to visualize the guitar fretboard and construct custom scales and chord shapes. You can change the number of strings, the tuning of each string and the number of frets to show. You can choose the root note, whether you want to display semitones as flats or sharps shown by name or interval. At the bottom you can construct your scale to visualize it on the fretboard. You can click the fretboard to highlight cord or scale shapes. You can clean the fretboard with the two red buttons.