# QB説明　２年　長さと水のかさ vs AI出題

The clearest difference is price: AI出題 at Free against QB説明　２年　長さと水のかさ's $3.99. AI出題 also leads on update cadence (every 6 weeks vs every 32 months). QB説明　２年　長さと水のかさ's advantage is ads (none vs shown) and iOS requirement (13.0 vs 18.0). On in-app purchases and device support there is nothing between them.

AI出題 is free to download; QB説明　２年　長さと水のかさ costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

QB説明　２年　長さと水のかさ ships an update every 32 months, AI出題 every 6 weeks. The most recent releases landed on October 10, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | QB説明　２年　長さと水のかさ | AI出題 |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 32 months | **Every 6 weeks** |
| Size | 9 MB | 28 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Suzuki Educational Software Co.,Ltd.](https://appshunter.io/developer/585512975) | [KENICHI YAMAMOTO](https://appshunter.io/developer/1335325739) |

## What reviewers say

### 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


### AI出題

[App page](https://appshunter.io/ios/app/ai-4/id6741074123)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### 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.

### Is AI出題 free?

AI出題 is free to download, with no in-app purchases.

### Do QB説明　２年　長さと水のかさ or AI出題 have ads?

AI出題 shows ads; QB説明　２年　長さと水のかさ does not.

### Which is updated more often, QB説明　２年　長さと水のかさ or AI出題?

QB説明　２年　長さと水のかさ ships an update every 32 months, and AI出題 every 6 weeks. Most recently, QB説明　２年　長さと水のかさ was updated on October 10, 2026 and AI出題 on October 9, 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.*