# KeyMorph vs DoReQuiz

The clearest difference is update cadence: DoReQuiz at every 4 days against KeyMorph's every 3 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

KeyMorph ships an update every 3 weeks, DoReQuiz every 4 days. Both last shipped on October 8, 2026.

## The numbers

| Metric | KeyMorph | DoReQuiz |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 4 days** |
| Size | 31 MB | 46 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Omni Devs](https://appshunter.io/developer/1830893808) | [Gautier de Faultrier](https://appshunter.io/developer/1887696838) |

## What reviewers say

### KeyMorph

[App page](https://appshunter.io/ios/app/keymorph-music-transposition/id6749544555)

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

**In-app purchases:** none


### DoReQuiz

[App page](https://appshunter.io/ios/app/dorequiz/id6780059863)

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

**In-app purchases:** none


## Frequently asked questions

### Is KeyMorph free?

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

### Is DoReQuiz free?

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

### Do KeyMorph or DoReQuiz have ads?

Neither KeyMorph nor DoReQuiz shows ads.

### Which is updated more often, KeyMorph or DoReQuiz?

KeyMorph ships an update every 3 weeks, and DoReQuiz every 4 days. Most recently, KeyMorph was updated on October 8, 2026 and DoReQuiz on October 8, 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.*