Guitar Theory Studio Fretboard

Stop wondering what to practice. Guitar Theory Studio builds you a four-week guitar theory plan through the tools you already use, walks you through it on a physically accurate neck, and changes the plan as you improve. Every theory tool is free; your first week is free. Play it on 6-, 7- or 8-string guitar, or 4-, 5- or 6-string bass, in English or Spanish.

YOUR PLAN — A FOUR-WEEK PATH, BUILT FOR YOU
Tell GTS what you know and what you want to be able to play. Five questions later you have a four-week plan through the fretboard, chords, scales, arpeggios and ear training: each step opens the exact screen — a scale on the neck, a progression to hear, a loop to drill, a test — and tells you why. Week one is free.

EVERY TOOL IS FREE
Explore any guitar scale, key, or CAGED shape on the Fretboard Explorer. Build and hear progressions with smooth voice leading in the Chord & Progression Builder — with a library of 25 classic progressions, every chord numbered in both Nashville Number System notation and Roman numerals. Hear any progression in one of twelve strumming patterns, or tap out your own. Sweep arpeggios for every chord in a key. Drill every 7-note scale in its seven three-notes-per-string (3NPS) positions, plus the pentatonic boxes, with the metronome-driven Practice Loop at any tempo — or start guided practice and it walks you through every position, timed, hands-free. Tune up with the built-in tuner, then train your bends: the bend trainer listens and shows how close each one lands. No account needed.

THE DAILY — A MUSIC THEORY QUIZ FOR GUITAR
Ten quick questions a day — read the neck, know the key, trust your ear. Pitched to where you are, easier when you're new, new one at midnight, and a streak that grows every day you show up. Miss a question and it teaches you the answer. Interval and chord-quality questions double as ear training. Tap Test Me inside any tool for five questions about exactly what is on screen.

ASK — AI THAT SETS UP THE TOOL FOR YOU
Type a question like "show me D Dorian" or "a 12-bar blues in E" and the right tool opens, already set up. The AI only picks the tool and settings — every note and spelling is drawn by the same theory engine as the rest of the app, so the answer on the fretboard is always right.

GTS PRO — THE PATH KEEPS GOING
Weeks two to four of your plan, each rebuilt from how the last one went: what felt hard comes back, what felt easy doesn't. Ask for a change in plain words. When a plan is complete, see what improved and start your next four weeks from there. Plus workouts built from what you miss, mastery levels revisited just before you'd forget, full progress history with practice-time tracking and your best tempo per position, unlimited Test Me, expanded Ask, unlimited saved presets. GTS Pro is a monthly or yearly subscription with a 7-day free trial, or a one-time lifetime purchase — manage or cancel anytime in your store account settings.

Notes and chords are spelled the way the key is actually written — B flat in F major, not A sharp.

Whether you're learning your first guitar scale or building a music theory practice routine that actually sticks, Guitar Theory Studio keeps theory and the fretboard in the same place.

GTS FOR INSTRUCTORS
Teachers assign exactly what they taught — the scale, the position, the tempo — and students open it already set up. Practice minutes, tempos and how each assignment felt come back to the instructor's dashboard, with a recap email after each lesson. Free for teachers; students join with a code from their instructor.

WHAT YOU CAN LEARN
Major and minor scales, pentatonic and blues boxes, the modes (Dorian, Phrygian, Lydian, Mixolydian and the rest), the CAGED system, three-notes-per-string positions, the notes on the fretboard, the chords in every key, chord progressions and the Nashville Number System, arpeggios, intervals and ear training. Every one is drawn on a real guitar neck and spelled the way the key is written.

Recent changes:
• Strumming patterns for guitar: hear any chord progression strummed in one of twelve patterns, or tap out your own.
• GTS in Spanish, with Do Re Mi note names. It follows your phone's language, or choose it in Settings.
• Small fixes.