# Gradation Piano vs DoReQuiz

The clearest difference is device support: DoReQuiz at 3 against Gradation Piano's 1. DoReQuiz also leads on iOS requirement (15.0 vs 18.6). On price, ads and in-app purchases there is nothing between them.

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

## The numbers

| Metric | Gradation Piano | DoReQuiz |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 4 days |
| Size | 6 MB | 46 MB |
| Requires iOS | 18.6 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [MASATO MISAWA](https://appshunter.io/developer/1609449895) | [Gautier de Faultrier](https://appshunter.io/developer/1887696838) |

## What reviewers say

### Gradation Piano

[App page](https://appshunter.io/ios/app/gradation-piano/id6778021165)

**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 Gradation Piano free?

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

### Is DoReQuiz free?

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

### Do Gradation Piano or DoReQuiz have ads?

Neither Gradation Piano nor DoReQuiz shows ads.

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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.*