# Quinterval vs ZZZ FretHarmony

The clearest difference is ads: Quinterval at none against ZZZ FretHarmony's shown. On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Quinterval sells 1 one-off in-app purchase and ZZZ FretHarmony sells 1 in-app purchase, starting at $1.99 per year. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Quinterval | ZZZ FretHarmony |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (21 ratings)](https://appshunter.io/ios/app/quinterval/id373810100/reviews)** | — |
| Number of ratings | **21** | — |
| Positive reviews | 78.2% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 8 months | — |
| Monetization | Free with in-app purchases | — |
| Size | 43 MB | 28 MB |
| Requires iOS | **15.6** | 16.3 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Oliver Hahn](https://appshunter.io/developer/324458008) | [SMOLT STAGE, K.K.](https://appshunter.io/developer/1708601451) |

## 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 |


### ZZZ FretHarmony

[App page](https://appshunter.io/ios/app/zzz-fretharmony/id6806733979)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ZZZ FretHarmony Pro | $1.99 | per year |


## Frequently asked questions

### Is Quinterval free?

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

### Is ZZZ FretHarmony free?

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

### Do Quinterval or ZZZ FretHarmony have ads?

ZZZ FretHarmony shows ads; Quinterval does not.

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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.*