# Quinterval vs Transruler free

The clearest difference is review sentiment: Quinterval at 78% against Transruler free's 11%. Quinterval also leads on rating (4.4 vs 3.0) and ratings volume (21 vs 2). Transruler free's advantage is update cadence (every 2 months vs every 8 months) and iOS requirement (6.0 vs 15.6). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Quinterval sells 1 one-off in-app purchase and Transruler free sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Quinterval holds the better App Store score, 4.4 against 3.0. That said, the two scores are not equally well evidenced: Quinterval has 21 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 78% of Quinterval's written reviews are positive against 11% of Transruler free's.

Quinterval ships an update every 8 months, Transruler free every 2 months. The most recent releases landed on October 18, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Quinterval | Transruler free |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (21 ratings)](https://appshunter.io/ios/app/quinterval/id373810100/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/transruler-free/id469793113/reviews) |
| Number of ratings | **21** | 2 |
| Positive reviews | **78.2% of reviews** | 10.5% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 2 months** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 43 MB | 7 MB |
| Requires iOS | 15.6 | **6.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Oliver Hahn](https://appshunter.io/developer/324458008) | [Uwe Tilemann](https://appshunter.io/developer/307735525) |

## 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 |


### Transruler free

[App page](https://appshunter.io/ios/app/transruler-free/id469793113)

This app helps musicians understand, visualize, and play various musical scales. It features interactive rulers to display scales and keys, allowing for easy transposition and learning of scale relationships. Play individual notes or entire scales with simple taps.

**Highlights:** Visualize musical scales, Easy transposition, Interactive scale rulers, Tap to play notes, Double-tap to play scales, Learn scale relationships

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Transruler Piano | $1.99 | one-time |
| Transruler Guitar | $1.99 | one-time |
| Transruler Editor | $1.99 | one-time |


## Frequently asked questions

### Is Quinterval free?

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

### Is Transruler free free?

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

### Which has better reviews, Quinterval or Transruler free?

Quinterval is rated higher. Quinterval averages 4.4 out of 5 from 21 ratings, while Transruler free averages 3.0 from 2 ratings.

### Do Quinterval or Transruler free have ads?

Neither Quinterval nor Transruler free shows ads.

### Which is updated more often, Quinterval or Transruler free?

Quinterval ships an update every 8 months, and Transruler free every 2 months. Most recently, Quinterval was updated on October 18, 2026 and Transruler free on October 10, 2026.

---

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