# わかる！算数 小学４年【上】 vs QB説明　４年　直方体と立方体

The clearest difference is price: QB説明　４年　直方体と立方体 at $4.99 against わかる！算数 小学４年【上】's $9.99. QB説明　４年　直方体と立方体 also leads on iOS requirement (11.0 vs 15.0). On update cadence, ads, in-app purchases and device support there is nothing between them.

わかる！算数 小学４年【上】 costs $9.99 and QB説明　４年　直方体と立方体 $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

わかる！算数 小学４年【上】 ships an update every 37 months, QB説明　４年　直方体と立方体 every 32 months. The most recent releases landed on September 10, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | わかる！算数 小学４年【上】 | QB説明　４年　直方体と立方体 |
| --- | --- | --- |
| Price | $9.99 | **$4.99** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 37 months | **Every 32 months** |
| Size | 50 MB | 10 MB |
| Requires iOS | 15.0 | **11.0** |
| Devices | iPad | iPad |
| Age rating | 4+ | 4+ |
| Developer | [がくげい](https://appshunter.io/developer/415230275) | [Suzuki Educational Software Co.,Ltd.](https://appshunter.io/developer/585512975) |

## What reviewers say

### わかる！算数 小学４年【上】

[App page](https://appshunter.io/ios/app/id897322501)

**In-app purchases:** none


### QB説明　４年　直方体と立方体

[App page](https://appshunter.io/ios/app/qb/id1470180201)

**In-app purchases:** none


## Frequently asked questions

### Is わかる！算数 小学４年【上】 free?

わかる！算数 小学４年【上】 costs $9.99, with no in-app purchases.

### Is QB説明　４年　直方体と立方体 free?

QB説明　４年　直方体と立方体 costs $4.99, with no in-app purchases.

### Do わかる！算数 小学４年【上】 or QB説明　４年　直方体と立方体 have ads?

Neither わかる！算数 小学４年【上】 nor QB説明　４年　直方体と立方体 shows ads.

### Which is updated more often, わかる！算数 小学４年【上】 or QB説明　４年　直方体と立方体?

わかる！算数 小学４年【上】 ships an update every 37 months, and QB説明　４年　直方体と立方体 every 32 months. Most recently, わかる！算数 小学４年【上】 was updated on September 10, 2026 and QB説明　４年　直方体と立方体 on September 15, 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.*