# QB説明　５年　速さ vs 楽しい理科小４（ダンケ）

The clearest difference is price: 楽しい理科小４（ダンケ） at Free against QB説明　５年　速さ's $3.99. 楽しい理科小４（ダンケ） also leads on update cadence (every 13 months vs every 32 months). QB説明　５年　速さ's advantage is in-app purchases (none vs 1) and iOS requirement (13.0 vs 18.2). On ads and device support there is nothing between them.

楽しい理科小４（ダンケ） is free to download; QB説明　５年　速さ costs $3.99 up front. 楽しい理科小４（ダンケ） sells 1 one-off in-app purchase. QB説明　５年　速さ asks for nothing beyond the download.

QB説明　５年　速さ ships an update every 32 months, 楽しい理科小４（ダンケ） every 13 months. The most recent releases landed on September 10, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | QB説明　５年　速さ | 楽しい理科小４（ダンケ） |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 32 months | **Every 13 months** |
| Size | 9 MB | 24 MB |
| Requires iOS | **13.0** | 18.2 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Suzuki Educational Software Co.,Ltd.](https://appshunter.io/developer/585512975) | [Norio Takeda](https://appshunter.io/developer/1485221811) |

## What reviewers say

### QB説明　５年　速さ

[App page](https://appshunter.io/ios/app/qb/id1450142242)

**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 QB説明　５年　速さ free?

QB説明　５年　速さ costs $3.99, 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 QB説明　５年　速さ or 楽しい理科小４（ダンケ） have ads?

Neither QB説明　５年　速さ nor 楽しい理科小４（ダンケ） shows ads.

### Which is updated more often, QB説明　５年　速さ or 楽しい理科小４（ダンケ）?

QB説明　５年　速さ ships an update every 32 months, and 楽しい理科小４（ダンケ） every 13 months. Most recently, QB説明　５年　速さ was updated on September 10, 2026 and 楽しい理科小４（ダンケ） on September 17, 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.*