# 楽しくなる算数2年上 vs QB説明　２年　長さと水のかさ

The clearest difference is price: QB説明　２年　長さと水のかさ at $3.99 against 楽しくなる算数2年上's $7.99. 楽しくなる算数2年上's advantage is update cadence (every 14 months vs every 32 months) and iOS requirement (9.0 vs 13.0). On ads, in-app purchases and device support there is nothing between them.

楽しくなる算数2年上 costs $7.99 and QB説明　２年　長さと水のかさ $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

楽しくなる算数2年上 ships an update every 14 months, QB説明　２年　長さと水のかさ every 32 months. The most recent releases landed on November 10, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | 楽しくなる算数2年上 | QB説明　２年　長さと水のかさ |
| --- | --- | --- |
| Price | $7.99 | **$3.99** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 14 months** | Every 32 months |
| Size | 69 MB | 9 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPad | iPad |
| Age rating | 4+ | 4+ |
| Developer | [KoikeSystemPro Inc.,](https://appshunter.io/developer/426904750) | [Suzuki Educational Software Co.,Ltd.](https://appshunter.io/developer/585512975) |

## What reviewers say

### 楽しくなる算数2年上

[App page](https://appshunter.io/ios/app/2/id468554385)

**Features:** macOS Compatibility

**In-app purchases:** none


### QB説明　２年　長さと水のかさ

[App page](https://appshunter.io/ios/app/qb/id1470191466)

**In-app purchases:** none


## Frequently asked questions

### Is 楽しくなる算数2年上 free?

楽しくなる算数2年上 costs $7.99, with no in-app purchases.

### Is QB説明　２年　長さと水のかさ free?

QB説明　２年　長さと水のかさ costs $3.99, with no in-app purchases.

### Do 楽しくなる算数2年上 or QB説明　２年　長さと水のかさ have ads?

Neither 楽しくなる算数2年上 nor QB説明　２年　長さと水のかさ shows ads.

### Which is updated more often, 楽しくなる算数2年上 or QB説明　２年　長さと水のかさ?

楽しくなる算数2年上 ships an update every 14 months, and QB説明　２年　長さと水のかさ every 32 months. Most recently, 楽しくなる算数2年上 was updated on November 10, 2026 and QB説明　２年　長さと水のかさ on November 6, 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.*