# Thelonious

> A pocket guide to music theory

Canonical page: [https://chrome-stats.com/d/id6760714389](https://chrome-stats.com/d/id6760714389)

## Overview

- **ID:** `id6760714389`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Robert Natale
- **Category:** Music
- **Rating:** 5.00 / 5 (1 ratings)
- **Version:** 1.0
- **Last updated:** 2026-04-01
- **First published:** 2026-04-01
- **Size:** 34 MB
- **Data as of:** 2026-09-19
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/thelonious/id6760714389)
- **Website:** [https://robnatale-portfolio.netlify.app/](https://robnatale-portfolio.netlify.app/)
- **Privacy policy:** [https://robn8.github.io/thelonious-privacy/](https://robn8.github.io/thelonious-privacy/)

## Description

Learn Music Theory & Master Every Key

Thelonious is a music theory app designed to help you understand keys, chords, scales, and harmony through clear, visual layouts.

Explore major keys, review scale notes, and study diatonic chords in a format built for both learning and quick reference. Thelonious connects theory to real playing with chord progressions, guitar mode charts, and CAGED system material.

Use Thelonious to:

• Explore major keys and their scale notes
• Understand diatonic chords and key relationships
• Learn relative minor and dominant chords
• Study chord progressions and harmonic movement
• View guitar modes and CAGED chord charts

Whether you’re learning the fundamentals or deepening your understanding of harmony, Thelonious makes music theory easier to read, understand, and apply.

## Rankings

- #865,802 — Overall

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Source: [Chrome-Stats](https://chrome-stats.com/d/id6760714389)