# QB説明　３年　たし算の筆算 vs Science

The clearest difference is price: Science at $0.99 against QB説明　３年　たし算の筆算's $4.99. QB説明　３年　たし算の筆算's advantage is iOS requirement (11.0 vs 13.0). On update cadence, ads, in-app purchases and device support there is nothing between them.

QB説明　３年　たし算の筆算 costs $4.99 and Science $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

QB説明　３年　たし算の筆算 ships an update every 30 months, Science every 27 months. The most recent releases landed on May 15, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | QB説明　３年　たし算の筆算 | Science |
| --- | --- | --- |
| Price | $4.99 | **$0.99** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 30 months | **Every 27 months** |
| Size | 12 MB | 23 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPad | Apple TV |
| Age rating | 4+ | 4+ |
| Developer | [Suzuki Educational Software Co.,Ltd.](https://appshunter.io/developer/585512975) | [Illés László](https://appshunter.io/developer/316890672) |

## What reviewers say

### QB説明　３年　たし算の筆算

[App page](https://appshunter.io/ios/app/qb/id666613835)

**In-app purchases:** none


### Science

[App page](https://appshunter.io/ios/app/science-solarsystem/id1054480020)

**In-app purchases:** none


## Frequently asked questions

### Is QB説明　３年　たし算の筆算 free?

QB説明　３年　たし算の筆算 costs $4.99, with no in-app purchases.

### Is Science free?

Science costs $0.99, with no in-app purchases.

### Do QB説明　３年　たし算の筆算 or Science have ads?

Neither QB説明　３年　たし算の筆算 nor Science shows ads.

### Which is updated more often, QB説明　３年　たし算の筆算 or Science?

QB説明　３年　たし算の筆算 ships an update every 30 months, and Science every 27 months. Most recently, QB説明　３年　たし算の筆算 was updated on May 15, 2026 and Science 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.*