Circle Of Fifths Pro

Explore keys, modes, chords, and harmony with a clear, modern Circle of Fifths. Now with support for 12 additional languages.

Circle of Fifths Pro is a musician‑first tool for understanding how music fits together. Whether you're learning harmony, composing, improvising, or teaching, the app gives you a clear, intuitive way to explore keys, scales, modes, and chord relationships.

Built with a clean interface and a modern theory engine, the app visualises the structure of Western music in a way that feels natural and immediately useful. Every interaction — from selecting a key to exploring harmonic movement — is designed to support real musical understanding.

Circle of Fifths Pro stays out of your way so you can stay focused on learning, creating, and practicing.

Free Features (Beginner Mode) A simple, accessible introduction to the circle:

Interactive Circle of Fifths

Major and minor keys

Relative and parallel relationships

Basic key signatures and tonal centers

Clean, minimal interface

No ads, no tracking, no data collection

Perfect for beginners learning how keys connect.

Pro Features (Intermediate + Advanced Modes) Unlock the full harmony toolkit for deeper study, teaching, and composition:

Mode Explorer

Ionian through Locrian

Scale tones, interval patterns, and modal structures

Clear visual layouts for fast learning

Chord Families

Tonic, subdominant, dominant

Diatonic chord mapping for every key

Modal interchange and harmonic movement

Key Signature Breakdown

Sharps, flats, and enharmonic equivalents

Relative major/minor connections

Diatonic Chord Strip

See diatonic chords for any selected key

Tap to hear each chord instantly

Playback Tools

Play individual diatonic chords

Play I–V–vi–IV progressions

Playback styles: Block, Up, Down

Advanced Harmonic Overlays

Secondary dominants

Pivot chords

Modulation paths

Color‑coded legend for quick understanding

Ideal for students, educators, composers, producers, and improvisers.

Why Musicians Choose Circle of Fifths Pro Fast, intuitive visual learning

Beautiful, modern design

Powerful tools for all skill levels

Perfect for practice, teaching, and composition

Privacy‑First No ads

No tracking

No data collection

All theory processing happens locally on your device

Circle of Fifths Pro collects no personal data. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://www.bamuda.com.au/circleoffifthsproprivacy.html