# 楽しい理科小４（ダンケ） vs PercentTraining

The clearest difference is in-app purchases: PercentTraining at none against 楽しい理科小４（ダンケ）'s 1. PercentTraining also leads on update cadence (daily vs every 13 months) and iOS requirement (15.6 vs 18.2). 楽しい理科小４（ダンケ）'s advantage is ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. 楽しい理科小４（ダンケ） sells 1 one-off in-app purchase. PercentTraining asks for nothing beyond the download.

楽しい理科小４（ダンケ） ships an update every 13 months, PercentTraining daily. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | 楽しい理科小４（ダンケ） | PercentTraining |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 13 months | **Daily** |
| Size | 24 MB | 3 MB |
| Requires iOS | 18.2 | **15.6** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Norio Takeda](https://appshunter.io/developer/1485221811) | [Katsuhiko Yao](https://appshunter.io/developer/1543188534) |

## What reviewers say

### 楽しい理科小４（ダンケ）

[App page](https://appshunter.io/ios/app/id1503349913)

**Features:** macOS Compatibility

**In-app purchases (1)**

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


### PercentTraining

[App page](https://appshunter.io/ios/app/percenttraining/id6744553926)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 楽しい理科小４（ダンケ） free?

楽しい理科小４（ダンケ） is free to download, with in-app purchases available.

### Is PercentTraining free?

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

### Do 楽しい理科小４（ダンケ） or PercentTraining have ads?

PercentTraining shows ads; 楽しい理科小４（ダンケ） does not.

### Which is updated more often, 楽しい理科小４（ダンケ） or PercentTraining?

楽しい理科小４（ダンケ） ships an update every 13 months, and PercentTraining daily. Most recently, 楽しい理科小４（ダンケ） was updated on November 3, 2026 and PercentTraining on October 30, 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.*