# 杜杜快乐阅读2B vs 学而思科学

The clearest difference is device support: 杜杜快乐阅读2B at 3 against 学而思科学's —. 杜杜快乐阅读2B also leads on iOS requirement (9.0 vs 12.0). On price and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | 杜杜快乐阅读2B | 学而思科学 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | — |
| Update frequency | Every 6 months | — |
| Size | 356 MB | 486 MB |
| Requires iOS | **9.0** | 12.0 |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 4+ | 4+ |
| Developer | [Changsha Xingcan Software Development Co., Ltd.](https://appshunter.io/developer/1126375430) | [Haoweilai Training School (Shanghai) Co., Ltd.](https://appshunter.io/developer/1721121513) |

## What reviewers say

### 杜杜快乐阅读2B

[App page](https://appshunter.io/ios/app/2b/id930980933)

**Features:** macOS Compatibility

**In-app purchases:** none


### 学而思科学

[App page](https://appshunter.io/ios/app/id1568247844)

**In-app purchases:** none


## Frequently asked questions

### Is 杜杜快乐阅读2B free?

杜杜快乐阅读2B is free to download, with no in-app purchases.

### Is 学而思科学 free?

学而思科学 is free to download, with no in-app purchases.

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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.*