You can zoom in by double-tapping or pinching out at any point of the whole 24-fret view, and move the range by scrolling.
This is not just a fretboard diagram focusing on positional notation, but also includes minor, major, and degree notation for each position from the tonic perspective, so you can understand the scale including its component notes.

Compatible with both right and left handed users

Major Scale
Major Pentatonic Scale
Minor Pentatonic Scale
Natural Minor Scale
Harmonic Minor Scale
Harmonic Minor Perfect Fifth Billow Scale
Melodic Miner Scale
Ionian Mode Scale
Dorian Mode Scale
Phrygian Mode Scale
Lydian Mode Scale
Lydian Flat Seven mode scale
Mixolydian mode scale
Aeolian mode scale
Locrian mode scale
Combination of diminished scale
Diminished scale
Altered scale
Whole-tone scale