# NSM Circle of Fifths — Harmony, Scales & Modes

> Harmony, Scales & Modes (iPhone/iPad app by Jason Zachariah.)

- Source: https://appshunter.io/ios/app/nsm-circle-of-fifths/id6772973741 (this page in markdown: same URL + `.md`)
- Developer: [Jason Zachariah](https://appshunter.io/developer/1896513710)
- Category: Education, Music
- Price: Free
- Age rating: 4+
- Requires: iOS 15.0 · 7 MB
- Languages: American English
- Released: 2026-05-27
- Data updated: 2026-06-04
- User reviews in markdown: https://appshunter.io/ios/app/nsm-circle-of-fifths/id6772973741/reviews.md

## What is NSM Circle of Fifths?

NSM Circle of Fifths is an interactive music theory companion by Nathaniel School of Music for students, teachers, composers, and improvisers.

Explore keys, scales, modes, intervals, harmonic movement, cadences, modulation paths, and progressions around the circle of fifths. The app combines clear visual maps with playable examples so you can see, hear, and practice how music connects.

FEATURES
* Interactive circle of fifths visualization
* Major and minor key signatures with relative key relationships
* 13 learning modes covering scales, modes, cycles, harmony, and practice
* 24 guided lessons and hundreds of quiz questions
* Ear-training and interval practice
* Progression, cadence, and modulation tools
* Tone.js audio playback for scales, chords, and patterns
* Works without an account

BY NATHANIEL SCHOOL OF MUSIC
Built for practical music learning, composition practice, and harmony fluency.


## Version history (last 2 releases)

### 1.0.1 — 2026-06-01

Improves iOS audio playback reliability and native app behavior.

### 1.0 — 2026-05-28

No release notes.

## More apps by Jason Zachariah

- [Chord Randomizer](https://appshunter.io/ios/app/chord-randomizer/id6771607928)
- [Chord Trees](https://appshunter.io/ios/app/chord-trees/id6772963450)

All apps by Jason Zachariah: https://appshunter.io/developer/1896513710

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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 2026-06-04.*