Guitar Visualizer vs Music Theory Decoder

See the fretboard like never before. Guitar Visualizer is the intelligent fretboard tool that shows you every scale, chord, and mode in every position, in every key. No more googling chord diagrams. No more memorizing shapes one at a time. Just open the app and see it all. SUBSCRIPTION: Access to all features requires a paid subscription to Guitar Visualizer Pro, yearly or monthly ($19.99/year or $2.99/month in the US; prices vary by country and are shown in the app before you subscribe). New subscribers start with a 7-day free trial. Auto-renews unless cancelled at least 24 hours before the renewal date. Manage or cancel anytime in iPhone Settings → Apple ID → Subscriptions. Key Features: SCALES & MODES: Every scale across the entire neck. Pentatonic, Major, Minor, Dorian, Mixolydian, and more. Switch between clean view, note names, and interval numbers with one tap. CHORDS & VOICINGS: Every chord type with real, playable voicings sourced from professional references. Major, Minor, 7ths, 9ths, diminished, augmented, sus chords, and more — all with multiple positions across the neck. THE CAGED SYSTEM: See how chord shapes connect across the fretboard. The CAGED system, fully visualized — switch between C, A, G, E, and D positions instantly. TWO LAYERS: See a scale and a chord at the same time. Layer them together to understand which notes overlap — the fastest way to connect theory to playing. CHORD ANALYZER: Tap any notes on the fretboard and the analyzer identifies what chord you're playing. It even recognizes specific voicing shapes. TARGET NOTES: Highlight specific scale degrees to focus your practice. See which notes are the 3rd, the 5th, the 7th — across every position. DISPLAY MODES: Switch between clean fretboard, note names, or interval numbers. See the theory your way. Built for guitarists who want to understand what they're playing — not just memorize it. Terms of Service: https://www.notion.so/Terms-of-Service-Guitar-Visualizer-341d65a2466a80aaadf2eea2a8e2cc66 Customer Support: We really care about your experience! If you have any questions or suggestions, please reach out to hello@guitarvisualizerapp.com and we will reach out to you as soon as possible.

Stop juggling five different apps and theory books. Music Theory Decoder combines a complete music theory guide — 18 in-depth lessons with interactive examples — with the practical tools you actually need: chord finder, scale library, tuner, metronome, drone, and vocal practice. Built around an interactive Circle of Fifths, every theory concept links directly to the chords, scales, and progressions where you'll use it. Hear it. See it. Understand it. — WHAT'S INSIDE — ◆ DECODER The interactive Circle of Fifths at the heart of the app. Tap any key to see its diatonic chords (I, IV, V, ii, iii, vi, vii°) laid out clearly. Flip the card to access 12 classic chord progressions — Pop Classic, Four Chords, 50s Doo-Wop, Jazz ii–V–I, 12-Bar Blues, Pachelbel, Andalusian Cadence and more — auto-transposed to your chosen key. Hit play, pick a tempo (60–120 BPM), and hear them with the playing chord highlighted in real time. ◆ SCALES 20 scales across five categories: Modes (Ionian through Locrian), Minor (natural, harmonic, melodic, pentatonic), World (blues, flamenco), Japan (Hirajoshi, Insen, Yo), and Middle East (Phrygian Dominant, Double Harmonic, Hijaz). Every scale shows notes on guitar fretboard and piano keyboard, with audio preview up and down. ◆ CHORDS 30 chord types across all 12 roots — triads, 7ths, 6ths, altered dominants, extended 9/11/13 voicings. Multiple guitar fingerings per chord. Every interval labeled so you understand what you're playing. ◆ INTERACTIVE THEORY GUIDE 18 in-depth lessons covering everything from intervals to extended chords: Intervals, Scales, Three Minor Scales, Circle of Fifths, Chord Construction, Diatonic Chords, Chord Functions, Progressions, Cadences, Voice Leading, Secondary Dominants, Borrowed Chords, Modal Chords, Extended & Altered Chords, Guitar Theory, Piano Theory and more. Each lesson includes interactive staff notation, real examples, and direct links to the Circle of Fifths, scales, and chords where the theory actually lives. Theory you don't just read — you hear and play. ◆ TOOLS (7 professional utilities) • Tuner — Chromatic, accurate, with smooth spring animations • Metronome — Compound time (6/8, 9/8, 12/8), swing slider, beat accents, tap tempo, four click sounds • Drone — Continuous reference pitch for practice and improvisation. Four waveforms, three octaves • Free Sing — Real-time pitch monitor for singers. See every note you sing with cent-accurate tuning feedback • Vocal Warm-Up — Breathing coach + scale exercises with real-time pitch tracking • Capo Calculator — Instantly find capo position for any key • Transpose — Move any chord progression to any key — WHY MUSIC THEORY DECODER — ◆ All-in-one. Replace your tuner app, metronome app, theory book, chord library, and vocal tools with one unified experience. ◆ Built for real musicians. Dark theme, bold typography, professional design. Not a cartoon learning app — a working tool. ◆ Vocalists included. Free Sing, Vocal Warm-Up, and Drone form a complete practice suite for singers — a category most theory apps ignore. ◆ Learn by doing. Every theory section links to the interactive Circle of Fifths, scales, and chords. Hear it, see it, understand it. — WHO IT'S FOR — Guitarists learning chord theory. Pianists working through modes. Vocalists practicing intonation. Songwriters hunting for the right progression. Students preparing for exams. Band musicians decoding lead sheets on the fly. Whether you're picking up your first instrument or arranging your next album, Music Theory Decoder gives you the answers fast — and teaches you why they work. Requires iOS 16.0 or later. Microphone access used only for Tuner, Free Sing, and Vocal Warm-Up — audio is processed on-device and never recorded or transmitted.