# 鬼計算 vs 世界国旗クイズスタディ 小学生～大人までゲーム感覚で遊べる

The clearest difference is update cadence: 世界国旗クイズスタディ 小学生～大人までゲーム感覚で遊べる at every 4 days against 鬼計算's every 5 months. 世界国旗クイズスタディ 小学生～大人までゲーム感覚で遊べる also leads on iOS requirement (13.0 vs 15.2). 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.

鬼計算 ships an update every 5 months, 世界国旗クイズスタディ 小学生～大人までゲーム感覚で遊べる every 4 days. The most recent releases landed on October 8, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | 鬼計算 | 世界国旗クイズスタディ 小学生～大人までゲーム感覚で遊べる |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 5 months | **Every 4 days** |
| Size | 12 MB | 65 MB |
| Requires iOS | 15.2 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [masaaki genno](https://appshunter.io/developer/1611455396) | [ikeda tomoki](https://appshunter.io/developer/1538370047) |

## What reviewers say

### 鬼計算

[App page](https://appshunter.io/ios/app/hp/id1613670633)

**Features:** macOS Compatibility

**In-app purchases:** none


### 世界国旗クイズスタディ 小学生～大人までゲーム感覚で遊べる

[App page](https://appshunter.io/ios/app/id1630269368)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 鬼計算 free?

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

### Is 世界国旗クイズスタディ 小学生～大人までゲーム感覚で遊べる free?

世界国旗クイズスタディ 小学生～大人までゲーム感覚で遊べる is free to download, with no in-app purchases.

### Do 鬼計算 or 世界国旗クイズスタディ 小学生～大人までゲーム感覚で遊べる have ads?

Both 鬼計算 and 世界国旗クイズスタディ 小学生～大人までゲーム感覚で遊べる show ads.

### Which is updated more often, 鬼計算 or 世界国旗クイズスタディ 小学生～大人までゲーム感覚で遊べる?

鬼計算 ships an update every 5 months, and 世界国旗クイズスタディ 小学生～大人までゲーム感覚で遊べる every 4 days. Most recently, 鬼計算 was updated on October 8, 2026 and 世界国旗クイズスタディ 小学生～大人までゲーム感覚で遊べる on October 25, 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.*