# 开开心心背单词 vs 可牛英语

The clearest difference is in-app purchases: 开开心心背单词 at none against 可牛英语's 10. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. 可牛英语 sells 10 one-off in-app purchases. 开开心心背单词 asks for nothing beyond the download.

## The numbers

| Metric | 开开心心背单词 | 可牛英语 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 11 days |
| Size | 47 MB | 85 MB |
| Requires iOS | **12.0** | 13 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [光平 王](https://appshunter.io/developer/1045947341) | [杭州迅易科技有限公司](https://appshunter.io/developer/1722110262) |

## What reviewers say

### 开开心心背单词

[App page](https://appshunter.io/ios/app/id6480445030)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### 可牛英语

[App page](https://appshunter.io/ios/app/id6499072459)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 增加1000个单词上限 | $0.99 | one-time |
| 增加500个单词上限 | $0.99 | one-time |
| 增加3000个单词上限 | $2.99 | one-time |
| 增加6000个单词上限 | $3.99 | one-time |
| 1个月会员 | $4.99 | one-time |
| 3个月会员 | $9.99 | one-time |
| 单词数无限 | $9.99 | one-time |
| 增加10000个单词上限 | $9.99 | one-time |
| 1年会员 | $19.99 | one-time |
| 永久会员 | $69.99 | one-time |


## Frequently asked questions

### Is 开开心心背单词 free?

开开心心背单词 is free to download, with no in-app purchases.

### Is 可牛英语 free?

可牛英语 is free to download, with in-app purchases available.

### Do 开开心心背单词 or 可牛英语 have ads?

Neither 开开心心背单词 nor 可牛英语 shows ads.

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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.*