# QB説明　３年　小数 vs UDリーダー

The clearest difference is price: UDリーダー at Free against QB説明　３年　小数's $4.99. UDリーダー also leads on update cadence (every 3 weeks vs every 33 months). QB説明　３年　小数's advantage is iOS requirement (11.0 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; QB説明　３年　小数 costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

QB説明　３年　小数 ships an update every 33 months, UDリーダー every 3 weeks. The most recent releases landed on October 4, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | QB説明　３年　小数 | UDリーダー |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 33 months | **Every 3 weeks** |
| Size | 8 MB | 9 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPad | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Suzuki Educational Software Co.,Ltd.](https://appshunter.io/developer/585512975) | [kazuhito ujima](https://appshunter.io/developer/1440096648) |

## What reviewers say

### QB説明　３年　小数

[App page](https://appshunter.io/ios/app/qb/id1105235119)

**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 QB説明　３年　小数 free?

QB説明　３年　小数 costs $4.99, 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 QB説明　３年　小数 or UDリーダー have ads?

Neither QB説明　３年　小数 nor UDリーダー shows ads.

### Which is updated more often, QB説明　３年　小数 or UDリーダー?

QB説明　３年　小数 ships an update every 33 months, and UDリーダー every 3 weeks. Most recently, QB説明　３年　小数 was updated on October 4, 2026 and UDリーダー on October 14, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*