A new solution to help beginner, intermediate and advanced players of instruments with the fretboard.

Whether you are looking for a more harmonic melody, alternative chord substitutions, what your fretboard looks like in a different tuning, or want to transfer your music knowledge to a new instrument. The Fretboard Calculator is a fast, easy solution.

• Great app
  by Bo-Kral
  In a nice layout, it provides a complete picture of the fretboard, in my case, banjo. I have several books on scales, chords, but this APP ties it all to the fretboard. Well, worth having - useful reference and look up AP.
• Surprisingly Awesome
  by Steve the Ripper
  As a Song Writer, musician, and aspiring producer, this is a fantastic app. It's great for practice giving me a reference for chords and scales on both the ukulele and guitar.
• Finally!
  by BuffaloShrimp
  Chord illustrations in chord apps are typically limited to six-string guitar chord tones that one can capture with four fingers - six notes max. This app not only reveals chord tones over the entire fretboard but also includes a four-string bass mode, making it extremely useful to the "walking" base line student. Chord and scale selection is quick and easy (not the miserable rolling wheel). This is a wonderful app! If a note name/modal number toggle (All I see are black and red dots) and the notes on the nut were added to the mix, I'd give this app eight stars! Thanks for a great app!
• Not for beginners but..
  by Jakdooelwbahifoebqbshci
  When I got his app, I knew very little about scales and keys on a fretboard. At first, I couldn't see any rhyme or reason. I didn't even know what the numbers meant. But pretty much after I figured that out, it turned into a fantastic resource that is fast and easy to use.
• Extra-chord-inary
  by johhny ringo
  Lots of chords No clutter A tone of scales Highly recommended