# Guitarist Buddy — Guitarist's music theory buddy

> Guitarist's music theory buddy (iPhone/iPad app by DOUGLAS ANDRE DEVILLIER.)

- Source: https://appshunter.io/ios/app/guitarist-buddy/id6795325643 (this page in markdown: same URL + `.md`)
- Developer: [DOUGLAS ANDRE DEVILLIER](https://appshunter.io/developer/6773560078)
- Category: Music, Education
- Price: $1.99
- Age rating: 4+
- Requires: iOS 26.5 · 6 MB
- Languages: English
- Released: 2026-08-13
- Data updated: 2026-10-01

## What is Guitarist Buddy?

Guitarist Buddy is a music theory reference and practice tool built for guitar and ukulele players.

Select any of 30 major and minor keys — including all enharmonic pairs — and instantly see the notes in the key, the 7 diatonic chords, and a fretboard diagram showing exactly where to play them.

Key Features:
• Circle of fifths with all 30 keys — tap any segment to select
• Diatonic chords with chord quality labels and Roman numeral analysis
• Chord enhancements — Major 7, Minor 7, Dominant 7, Sus chords, Diminished, Augmented and more
• Fretboard showing all chord tones and scale notes in position, tap fretboard dots to hear individual guitar notes and try out different phrases in the app
• 7 modes — Ionian, Dorian, Phrygian, Lydian, Mixolydian, Aeolian, Locrian
* Chord Builder page - provides several chord options and inversions per diatonic chord, including all CAGED shapes.  Even with a capo.
• Setup page, including
- Support for a 6-string guitar and 4-string ukulele in Setup page.
- Uses actual guitar and ukulele string samples for playback
- Custom tuning support per string
- Lefty mode to flip the fretboard diagrams for lefty players
• Native IOS GUI with Full dark mode support
• Support for pentatonic, blues, and harmonic minor scales on the fretboard
• Consistent nomenclature for the degrees shown on each of the scale notes for a chord being displayed.  Root of selected chord is always 1, regardless of its degree in the Diatonic Scale.
* Capo Calculator to support simpler key changes
* Reverse chord lookup
* Simple Chord Progression builder to help you see how to transition between two chords
* Melody Builder to work on and get suggestions for solo concepts in chosen key

## Is Guitarist Buddy safe?

Not enough ratings yet to assess Guitarist Buddy.

## Is Guitarist Buddy legit?

Guitarist Buddy appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Guitarist Buddy is 65 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 5 releases)

### 2.4 — 2026-09-24

* Added ukulele samples
    * Added major blues and harmonic minor as scale types which can be displayed
    * Common Progressions — a new Progression Builder view with common patterns like I-IV-V, I-V-vi-IV, 12-bar blues, ii-V-I, and minor variants. Similar in feel to the existing Chord Builder flow.  A library of named progressions (I-IV-V, I-V-vi-IV, 12-bar blues, etc.) that auto-populate the Key Explorer's chord selection for the current key. 
    * Chord Transition Helper — tap two chords and get common fingering pivot points / suggested fingering paths between them.
    * Capo Calculator — enter a Song Key and a preferred Play In key, get the capo fret plus a translated chord chart. A guitarist hears a song, finds out it's in Eb, doesn't want to play all barre chords — the capo tool tells them capo 1, play in D or capo 3, play in C. You'd show the original key, let them pick a target chord-shape key, and it outputs capo fret. 
    * modal characteristic notes and scale degree labels on the diatonic chord buttons.
    * Reverse chord lookup - tap frets on a fretboard diagram and identify what chord it is chromatically, across all 12 roots and all qualities, with no dependency on any selected key.
    * Improvements on Melody Builder - to include and suggest several guitar techniques to use as melodies, solo with in the context of the current key

### 2.3 — 2026-08-25

Added an underlying chord reference for the app to define and derive common chords and CAGED shapes

### 2.2 — 2026-08-20

Bug fix to recover the missing enharmonic keys from Circle of 5ths

### 2.1 — 2026-08-19

* Complete rebuild in native iOS GUI.  Cleaner layout.
    * Fix scale options in key explorer, no blues in major, no anything in diminished. 
    * Bug fixes
    * UI Consistency Fixes
    * Improved close to root logic and root definition logic
    * Added CAGED Chord shapes in Key Explorer and Chord Builder

### 1.0 — 2026-08-13

No release notes.

## More apps by DOUGLAS ANDRE DEVILLIER

- [Bassist Buddy](https://appshunter.io/ios/app/bassist-buddy/id6773560076)
- [Camera Buddy](https://appshunter.io/ios/app/camera-buddy/id6799241252)
- [Cajun Bourre](https://appshunter.io/ios/app/cajun-bourre/id6809592962)

All apps by DOUGLAS ANDRE DEVILLIER: https://appshunter.io/developer/6773560078

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-01.*