Tonal Harmony

No subscriptions. No ads. No tracking. A focused practice and theory tool for guitarists who are serious about getting better.

Tonal Harmony is a focused practice and theory tool for guitarists. Built for serious students who want depth without distraction.

No streaks. No nags. No subscription. Pay once, own forever.

PRACTICE Play along to 29 chord progressions across every key. Switch instruments — piano, acoustic guitar, or sustained strings. Choose from twelve rhythm patterns, from whole-note pads to bossa nova, funk sixteenths, fingerpicking, and driving triplets. Each progression transposes instantly to any of the twelve keys.

LEARN Browse chord progressions grouped by major and minor. Study eight scale systems — major, natural minor, the pentatonics, blues, Dorian, Mixolydian, and harmonic minor — with position-based fretboard diagrams that show every note's degree. Walk the harmonic web to see how chords relate to each other.

CAGED Five barre chord positions, every key, with overlay scales — major or natural minor, both pentatonics, and blues. Find any diatonic chord within your current scale position. The fretboard system serious guitarists actually use, mapped clearly.

DIAGONAL PENTATONIC The 3+2 fragment system shown across the neck. One shape that repeats up two strings at a time, with B-string compensation. Connect every box position you already know. Major and minor as the same physical pattern with different roots.

DRILL Configure scope — difficulty, scales or arpeggios, key, position, note rate, session length. Each exercise shows a demo, then loops on a click track for you to play along. Track every exercise in your session.

CUSTOM Build your own progressions with Roman numerals, modal mixture, and secondary dominants. The chord palette respects music theory: diatonic on one shelf, borrowed and secondary chords on another, full chromatic always available. Save, edit, send to Practice.

TUNER On-device pitch detection. Works in any tuning. Audio never leaves your phone.

WHAT TONAL HARMONY IS NOT Not a song library. Not a karaoke trainer. Not a video lesson platform. Not a social app. Not an audio recognition service.

Tonal Harmony is a tool for the hour you sit down with the guitar and want to actually get better.

Built by one developer who got tired of paying monthly to learn music theory.