# よくわかる算数小学４年（ダンケ） vs 小学3年理科

The clearest difference is price: よくわかる算数小学４年（ダンケ） at Free against 小学3年理科's $2.99. よくわかる算数小学４年（ダンケ） also leads on iOS requirement (13.5 vs 15.0). 小学3年理科's advantage is in-app purchases (none vs 1) and update cadence (every 8 months vs every 18 months). On ads and device support there is nothing between them.

よくわかる算数小学４年（ダンケ） is free to download; 小学3年理科 costs $2.99 up front. よくわかる算数小学４年（ダンケ） sells 1 one-off in-app purchase. 小学3年理科 asks for nothing beyond the download.

よくわかる算数小学４年（ダンケ） ships an update every 18 months, 小学3年理科 every 8 months. The most recent releases landed on September 20, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | よくわかる算数小学４年（ダンケ） | 小学3年理科 |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 18 months | **Every 8 months** |
| Size | 25 MB | 22 MB |
| Requires iOS | **13.5** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Norio Takeda](https://appshunter.io/developer/1485221811) | [Gloding Inc.](https://appshunter.io/developer/780228385) |

## What reviewers say

### よくわかる算数小学４年（ダンケ）

[App page](https://appshunter.io/ios/app/id1532071298)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ゴールドコイン | $7.99 | one-time |


### 小学3年理科

[App page](https://appshunter.io/ios/app/3/id1592032619)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is よくわかる算数小学４年（ダンケ） free?

よくわかる算数小学４年（ダンケ） is free to download, with in-app purchases available.

### Is 小学3年理科 free?

小学3年理科 costs $2.99, with no in-app purchases.

### Do よくわかる算数小学４年（ダンケ） or 小学3年理科 have ads?

Neither よくわかる算数小学４年（ダンケ） nor 小学3年理科 shows ads.

### Which is updated more often, よくわかる算数小学４年（ダンケ） or 小学3年理科?

よくわかる算数小学４年（ダンケ） ships an update every 18 months, and 小学3年理科 every 8 months. Most recently, よくわかる算数小学４年（ダンケ） was updated on September 20, 2026 and 小学3年理科 on September 18, 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.*