AudioTheory Guitars is the ultimate reference tool for guitar notes and chords. Featuring an interactive keyboard, fretboard and chords, each note reacts across the set of customisable diagrams. For anyone who's ever wished music theory was that little bit more straightforward – this is the software for you.

The full set of features:

Seamlessly transcribe between piano and guitar using a straight-forward colour coding system and notation highlighting. Play a note on the keyboard to instantly see where it is in your chords and on your fretboard. Play the same note on your fretboard to see the reverse.

Set your tuning and capo. Everything else adjusts accordingly – no need for a chord transposition chart.

Choose your chords with open, power, barre, sus2 and dim7 chord sheets with fullscreen diagrams and playback options.

Exclude notes and never play out of key again. Your fretboard diagram now only shows the notes you need and your keyboard doesn't play the ones you don't.

Scale presets you can quickly apply to the application. Save and load functions to easily swap between customised views.

Midi support. Connect an external Midi input device to control the on-screen keyboard.

Full customisation. Select the chords you want. Left-handed mode for left-handed players. Shifted tunings with an option to drop the 6th string, plus fullscreen fretboard mode with full string-level tuning. Choose between guitar and bass fretboard diagrams.

What’s New

Version 1.12.2

Bug fix for mini scale-selector

Ratings and Reviews

5.0 out of 5
1 Rating

1 Rating

Uncle Pub ,

Very useful piece of software

Provider fixed problem I had with Big Sur operation very quickly.

Using app as an aid to creating walking basslines. It is proving to be very useful.


Fraser Mackenzie
50.8 MB

macOS 10.13.0 or later, 64-bit processor



Age Rating


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.