# 筆算の学習（わり算・かけ算） vs UDリーダー

The clearest difference is price: UDリーダー at Free against 筆算の学習（わり算・かけ算）'s $0.99. UDリーダー also leads on update cadence (every 3 weeks vs every 9 months). 筆算の学習（わり算・かけ算）'s advantage is iOS requirement (12.0 vs 15.0). On ads, in-app purchases and device support there is nothing between them.

UDリーダー is free to download; 筆算の学習（わり算・かけ算） costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

筆算の学習（わり算・かけ算） ships an update every 9 months, UDリーダー every 3 weeks. The most recent releases landed on October 18, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | 筆算の学習（わり算・かけ算） | UDリーダー |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 3 weeks** |
| Size | 4 MB | 9 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPad | iPad |
| Age rating | 4+ | 4+ |
| Developer | [masafumi sasaki](https://appshunter.io/developer/1016775706) | [kazuhito ujima](https://appshunter.io/developer/1440096648) |

## What reviewers say

### 筆算の学習（わり算・かけ算）

[App page](https://appshunter.io/ios/app/id1049200102)

**Features:** macOS Compatibility

**In-app purchases:** none


### UDリーダー

[App page](https://appshunter.io/ios/app/ud/id1637356914)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 筆算の学習（わり算・かけ算） free?

筆算の学習（わり算・かけ算） costs $0.99, with no in-app purchases.

### Is UDリーダー free?

UDリーダー is free to download, with no in-app purchases.

### Do 筆算の学習（わり算・かけ算） or UDリーダー have ads?

Neither 筆算の学習（わり算・かけ算） nor UDリーダー shows ads.

### Which is updated more often, 筆算の学習（わり算・かけ算） or UDリーダー?

筆算の学習（わり算・かけ算） ships an update every 9 months, and UDリーダー every 3 weeks. Most recently, 筆算の学習（わり算・かけ算） was updated on October 18, 2026 and UDリーダー 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.*