# わかる！算数 小学４年【上】 vs QB説明　５年　正多角形と円

The clearest difference is price: QB説明　５年　正多角形と円 at $3.99 against わかる！算数 小学４年【上】's $9.99. QB説明　５年　正多角形と円 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　５年　正多角形と円 $3.99 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　５年　正多角形と円 every 34 months. The most recent releases landed on October 26, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | わかる！算数 小学４年【上】 | QB説明　５年　正多角形と円 |
| --- | --- | --- |
| Price | $9.99 | **$3.99** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 37 months | **Every 34 months** |
| Size | 50 MB | 11 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　５年　正多角形と円

[App page](https://appshunter.io/ios/app/qb/id1448657476)

**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　５年　正多角形と円 free?

QB説明　５年　正多角形と円 costs $3.99, with no in-app purchases.

### Do わかる！算数 小学４年【上】 or QB説明　５年　正多角形と円 have ads?

Neither わかる！算数 小学４年【上】 nor QB説明　５年　正多角形と円 shows ads.

### Which is updated more often, わかる！算数 小学４年【上】 or QB説明　５年　正多角形と円?

わかる！算数 小学４年【上】 ships an update every 37 months, and QB説明　５年　正多角形と円 every 34 months. Most recently, わかる！算数 小学４年【上】 was updated on October 26, 2026 and QB説明　５年　正多角形と円 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.*