# Quinterval vs Tonality Trainer

The clearest difference is rating: Tonality Trainer at 5.0 against Quinterval's 4.3. Tonality Trainer also leads on in-app purchases (none vs 1) and update cadence (monthly vs every 8 months). Quinterval's advantage is ratings volume (20 vs 1). On price, ads and device support there is nothing between them.

Both are free to download. Quinterval sells 1 one-off in-app purchase. Tonality Trainer asks for nothing beyond the download.

Tonality Trainer holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: Quinterval has 20 ratings behind it against 1, so its average is the more settled of the two.

Quinterval ships an update every 8 months, Tonality Trainer monthly. The most recent releases landed on September 28, 2026 and June 24, 2026 respectively.

## The numbers

| Metric | Quinterval | Tonality Trainer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (20 ratings)](https://appshunter.io/ios/app/quinterval/id373810100/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/tonality-trainer/id1391584951/reviews)** |
| Number of ratings | **20** | 1 |
| Positive reviews | 78.2% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 8 months | **Monthly** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 43 MB | 29 MB |
| Requires iOS | 15.6 | **8.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Oliver Hahn](https://appshunter.io/developer/324458008) | [CAN SENER](https://appshunter.io/developer/1023097988) |

## What reviewers say

### Quinterval

[App page](https://appshunter.io/ios/app/quinterval/id373810100)

Explore the circle of fifths with interactive scale displays. Select keys via touch or slider to view major and parallel minor scales. Customize note notation and clef for a personalized musical experience.

**Highlights:** Interactive circle of fifths, Major and parallel minor scale display, Adjustable display range, Customizable note notation (German, English, Italian), Clef selection (G, C, F), Key signature display

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Enhanced Version | $0.99 | one-time |


### Tonality Trainer

[App page](https://appshunter.io/ios/app/tonality-trainer/id1391584951)

Learn the names and key signatures of musical tonalities. This application provides a straightforward way to master tonal concepts.

**Highlights:** Learn tonality names, Learn key signatures, Music education tool, Simple interface

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Quinterval free?

Quinterval is free to download, with in-app purchases available.

### Is Tonality Trainer free?

Tonality Trainer is free to download, with no in-app purchases.

### Which has better reviews, Quinterval or Tonality Trainer?

Tonality Trainer is rated higher. Quinterval averages 4.3 out of 5 from 20 ratings, while Tonality Trainer averages 5.0 from 1 ratings.

### Do Quinterval or Tonality Trainer have ads?

Neither Quinterval nor Tonality Trainer shows ads.

### Which is updated more often, Quinterval or Tonality Trainer?

Quinterval ships an update every 8 months, and Tonality Trainer monthly. Most recently, Quinterval was updated on September 28, 2026 and Tonality Trainer on June 24, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*