# 10を作ろう vs 不定方程式ガチャ

The clearest difference is price: 10を作ろう at Free against 不定方程式ガチャ's $3.99. 10を作ろう also leads on iOS requirement (15.1 vs 17.0). 不定方程式ガチャ's advantage is ads (none vs shown) and update cadence (every 9 days vs every 14 months). On in-app purchases and device support there is nothing between them.

10を作ろう is free to download; 不定方程式ガチャ costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

10を作ろう ships an update every 14 months, 不定方程式ガチャ every 9 days. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | 10を作ろう | 不定方程式ガチャ |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 14 months | **Every 9 days** |
| Size | 9 MB | 11 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [takeshi inoue](https://appshunter.io/developer/1452042026) | [Akira Hiraoka](https://appshunter.io/developer/1668714727) |

## What reviewers say

### 10を作ろう

[App page](https://appshunter.io/ios/app/10/id1453636144)

**Features:** macOS Compatibility

**In-app purchases:** none


### 不定方程式ガチャ

[App page](https://appshunter.io/ios/app/id6757098537)

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

**In-app purchases:** none


## Frequently asked questions

### Is 10を作ろう free?

10を作ろう is free to download, with no in-app purchases.

### Is 不定方程式ガチャ free?

不定方程式ガチャ costs $3.99, with no in-app purchases.

### Do 10を作ろう or 不定方程式ガチャ have ads?

10を作ろう shows ads; 不定方程式ガチャ does not.

### Which is updated more often, 10を作ろう or 不定方程式ガチャ?

10を作ろう ships an update every 14 months, and 不定方程式ガチャ every 9 days. Most recently, 10を作ろう was updated on October 26, 2026 and 不定方程式ガチャ on October 24, 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.*