# 素因数分解クイズ vs Prime Factor Chain

素因数分解クイズ and Prime Factor Chain are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

## The numbers

| Metric | 素因数分解クイズ | Prime Factor Chain |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 5 days | — |
| Size | 26 MB | 27 MB |
| Requires iOS | 16.6 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [YUKI WATANABE](https://appshunter.io/developer/1724288537) | [nihei keita](https://appshunter.io/developer/1866466968) |

## What reviewers say

### 素因数分解クイズ

[App page](https://appshunter.io/ios/app/1/id6740989986)

**Features:** macOS Compatibility

**In-app purchases:** none


### Prime Factor Chain

[App page](https://appshunter.io/ios/app/prime-factor-chain/id6806602279)

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

**In-app purchases:** none


## Frequently asked questions

### Is 素因数分解クイズ free?

素因数分解クイズ is free to download, with no in-app purchases.

### Is Prime Factor Chain free?

Prime Factor Chain is free to download, with no in-app purchases.

### Do 素因数分解クイズ or Prime Factor Chain have ads?

Both 素因数分解クイズ and Prime Factor Chain show 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.*