# がいすう　算数計算「がいすうくん」 vs 楽しい理科小４（ダンケ）

The clearest difference is in-app purchases: がいすう　算数計算「がいすうくん」 at none against 楽しい理科小４（ダンケ）'s 1. がいすう　算数計算「がいすうくん」 also leads on update cadence (every 2 months vs every 13 months) and iOS requirement (13.0 vs 18.2). On price, ads and device support there is nothing between them.

Both are free to download. 楽しい理科小４（ダンケ） sells 1 one-off in-app purchase. がいすう　算数計算「がいすうくん」 asks for nothing beyond the download.

がいすう　算数計算「がいすうくん」 ships an update every 2 months, 楽しい理科小４（ダンケ） every 13 months. The most recent releases landed on October 25, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | がいすう　算数計算「がいすうくん」 | 楽しい理科小４（ダンケ） |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 13 months |
| Size | 30 MB | 24 MB |
| Requires iOS | **13.0** | 18.2 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [SHINGO SATO](https://appshunter.io/developer/1484951923) | [Norio Takeda](https://appshunter.io/developer/1485221811) |

## What reviewers say

### がいすう　算数計算「がいすうくん」

[App page](https://appshunter.io/ios/app/id1494650452)

**Features:** macOS Compatibility

**In-app purchases:** none


### 楽しい理科小４（ダンケ）

[App page](https://appshunter.io/ios/app/id1503349913)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ゴールドコイン | $7.99 | one-time |


## Frequently asked questions

### Is がいすう　算数計算「がいすうくん」 free?

がいすう　算数計算「がいすうくん」 is free to download, with no in-app purchases.

### Is 楽しい理科小４（ダンケ） free?

楽しい理科小４（ダンケ） is free to download, with in-app purchases available.

### Do がいすう　算数計算「がいすうくん」 or 楽しい理科小４（ダンケ） have ads?

Neither がいすう　算数計算「がいすうくん」 nor 楽しい理科小４（ダンケ） shows ads.

### Which is updated more often, がいすう　算数計算「がいすうくん」 or 楽しい理科小４（ダンケ）?

がいすう　算数計算「がいすうくん」 ships an update every 2 months, and 楽しい理科小４（ダンケ） every 13 months. Most recently, がいすう　算数計算「がいすうくん」 was updated on October 25, 2026 and 楽しい理科小４（ダンケ） on October 4, 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.*