# Scale Theory — Internalize music theory.

> Internalize music theory. (iPhone/iPad app by YellowDress.)

- Source: https://appshunter.io/ios/app/scale-theory/id6761800685 (this page in markdown: same URL + `.md`)
- Developer: [YellowDress](https://appshunter.io/developer/509933147)
- Category: Music, Education
- Price: $1.99
- Age rating: 4+
- Requires: iOS 17.0 · 19 MB
- Languages: American English
- Released: 2026-05-25
- Data updated: 2026-08-20
- User reviews in markdown: https://appshunter.io/ios/app/scale-theory/id6761800685/reviews.md

## What is Scale Theory?

You know the theory. You just have to look it up.

Scale Theory is a drill tool for musicians who want faster, more reliable recall — key signatures, diatonic harmony, modes, chord functions, and relative minor relationships. Not slower. Not effortful. Just known.

What you'll learn:
• Key signatures: sharps, flats, and which notes they are, in both directions
• Relative minor keys, quizzed both ways
• Diatonic triads and seventh chords in every major key — names, qualities, and notes
• All seven modes: names, interval formulas, and characteristic chords
• Chord functions: identify and spell the dominant seventh and half-diminished chord in any key

How it works:
Each topic follows a review-then-quiz loop. New items are revealed one piece at a time, so you're predicting the next step before it appears. After every few new items, a recap quiz covers everything learned so far — not just what's recent. A randomized Practice mode presents questions in mixed formats across all keys, with upcoming answers hidden so you can't read ahead.

Key signatures follow circle-of-fifths order, which is how keys actually relate to each other.

Who it's for:
• Players who want to think faster when improvising or reading charts. 
• Anyone whose theory knowledge lives in their head in a slow, effortful way.
• Students prepping for graded exams. 

This is a drill tool, not a lesson. It assumes you've encountered these concepts — it's here to make them automatic.

## Chart rankings

- #194 in Top Paid · Music (US App Store)


## Version history (last 1 release)

### 1.0 — 2026-05-25

No release notes.

## More apps by YellowDress

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All apps by YellowDress: https://appshunter.io/developer/509933147

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-20.*