# ARN-Music 3-4 — Triads and Tetrads

> Triads and Tetrads (iPhone/iPad app by Nicolas Augsburger Rossi.)

- Source: https://appshunter.io/ios/app/arn-music-3-4/id6743497768 (this page in markdown: same URL + `.md`)
- Developer: [Nicolas Augsburger Rossi](https://appshunter.io/developer/1803162820)
- Category: Music, Education
- Price: $19.99
- Age rating: 4+
- Requires: iOS 17.6 · 4 MB
- Languages: American English, Arabic, Catalan, Croatian, Czech, Danish, Dutch, Finnish, Canadian French, Swiss High German and 25 more
- Released: 2025-04-10
- Data updated: 2026-08-03
- User reviews in markdown: https://appshunter.io/ios/app/arn-music-3-4/id6743497768/reviews.md

## What is ARN?

ARN-Music 3-4 innovatively displays the triads and tetrads available for any musical scale. It's a useful tool for studying and practicing chords and harmonization techniques. Thanks to the dedicated circle of fifths for each scale, you can create harmonious chord progressions. You can select degrees or notes by specifying the tonic, and save sessions with your personal annotations. Furthermore, you can export and import sessions between your devices, and share files with friends or students.


## Version history (last 5 releases)

### 2.4.37 — 2026-08-02

Minor improvements

### 2.4.36 — 2026-06-21

Minor improvements

### 2.4.34 — 2026-03-06

Minor improvements

### 2.4.33 — 2026-02-22

Minor improvements

### 2.4.31 — 2026-02-19

Minor improvements

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| App | Rating | Price | Category |
| --- | --- | --- | --- |
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| [Michlbauer](https://appshunter.io/ios/app/michlbauer/id1498433594) | — | Free | Music |
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| [Nu-Music Player](https://appshunter.io/ios/app/nu-music-player/id982811087) | 4.3 (61) | Free | Music |
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## More apps by Nicolas Augsburger Rossi

- [ARN G6 3-4](https://appshunter.io/ios/app/arn-g6-3-4/id6743498770)
- [ARN-Music 3](https://appshunter.io/ios/app/arn-music-3/id6743633914)
- [ARN B5 3-4](https://appshunter.io/ios/app/arn-b5-3-4/id6744575536)
- [ARN B4 3-4](https://appshunter.io/ios/app/arn-b4-3-4/id6744577173)
- [CL-1](https://appshunter.io/ios/app/cl-1/id6767980060)

All apps by Nicolas Augsburger Rossi: https://appshunter.io/developer/1803162820

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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 2026-08-03.*