Product overview
What Is GuitarHarmonyLab? The Visual Guitar Harmony App, Explained
GuitarHarmonyLab starts with a real chord chart: enter the chords or import a clear JPG, PNG or PDF, verify the editable result, then connect the progression to harmony analysis, fretboard work and practical exercises.
In one sentence
One chart, one connected practice workflow
Import or enter a progression, correct the chart if necessary, inspect its harmonic context on the guitar neck, and turn selected material into Practice Cards or a teacher assignment. The player keeps control of the source chart and the musical choices.
The gap every guitarist hits
Knowing a scale shape is not the same as applying it to a changing progression. When a paper chart appears at a lesson, rehearsal or jam, the practical questions are specific: what is the tonal centre, what role does each chord play, which notes connect two chords, and where can those notes be played in the current fretboard position?
What GuitarHarmonyLab does
GuitarHarmonyLab is built around one workflow: capture the progression, review its analysis, place relevant material on the fretboard, and create a focused task from it. Each stage remains connected to the same chart.
Tuning-aware fretboard
Note locations are calculated from the active tuning. Chord tones, scale material and fingering proposals are separate views to inspect. See The Verified Guitar Fretboard.
Harmony analysis
Review chord functions, guide tones and possible scale or arpeggio material. When the chart is ambiguous, the tonal centre can remain unset until the player or teacher confirms it.
Practice Cards
Save selected musical material as a focused exercise, return to it between sessions, and record a simple “practised” or “stuck” signal.
Teacher Studio
Organise student folders, assign an exercise from the chart, review progress signals and prepare PDF handouts. See Teacher Studio.
Who it is for
The clearest fit is an intermediate or advanced guitarist who already plays songs but wants to understand and practise the harmony behind a real progression. That includes players working on improvisation, chord tones, arpeggios, voice leading, open tunings or a 7-string Standard Low B setup. A beginner can use the same material with guidance from a teacher.
For teachers, the benefit is continuity: the chart discussed during the lesson can remain attached to the fretboard view, the exercise, the PDF handout and the student’s progress signal. The app supports the teacher’s explanation; it does not replace musical judgement, listening or feedback.
How it works in four steps
1. Capture
Type the progression or upload a clear JPG, PNG or PDF of the chord chart.
2. Verify
Review the recognised chords, correct the editable chart and confirm the tonal context when it is clear.
3. Explore
Compare chord functions, guide tones, scales or arpeggios and locate the selected material on the fretboard.
4. Practise or assign
Create a Practice Card for yourself or assign the exercise to a student through Teacher Studio.
What the workflow changes
A chord dictionary, tablature library or audio chord-recognition service can answer a different part of the learning process. GuitarHarmonyLab is designed to keep one user-supplied chart connected to its editable analysis, the fretboard and the resulting practice task. The useful distinction is the workflow, not a claim that one category replaces another.
Photo recognition also has limits: the source must be readable, and the recognised grid should be checked before relying on the analysis. Harmonic interpretation can have more than one valid answer. GuitarHarmonyLab provides structured options for a player or teacher to review rather than presenting every suggestion as musical fact. For a category-by-category comparison, read the guide to guitar theory and fretboard apps in 2026.
Start with your own progression
Choose a short progression you already play. Enter it or import a clear image, verify the result, then select one concrete objective: connect the thirds and sevenths, locate an arpeggio or compare scale material over a chord change. That first task shows how the chart, analysis and fretboard views work together.
Frequently asked questions
What is GuitarHarmonyLab?
GuitarHarmonyLab is a guitar harmony and practice application. It connects an entered or imported chord chart to editable analysis, fretboard views, Practice Cards and teacher assignments.
Can GuitarHarmonyLab read a photo of a chord chart?
It can recognise chords from a clear JPG, PNG or PDF. The result remains editable because image quality, handwriting and unusual layouts can affect recognition.
Does GuitarHarmonyLab replace a guitar teacher?
No. It organises analysis and practice material, while a teacher still provides musical judgement, technique feedback, listening guidance and an appropriate learning sequence.
Free Starter
Test the workflow with one progression
Start with Free Starter, verify a short chart and build one focused fretboard exercise from it.