# 记忆力训练营 vs 开开心心背单词

The clearest difference is in-app purchases: 开开心心背单词 at none against 记忆力训练营's 3. 开开心心背单词 also leads on ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. 记忆力训练营 sells 3 one-off in-app purchases. 开开心心背单词 asks for nothing beyond the download.

## The numbers

| Metric | 记忆力训练营 | 开开心心背单词 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | — |
| Size | 16 MB | 47 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [杭州家之馨电子商务有限公司](https://appshunter.io/developer/1641228139) | [光平 王](https://appshunter.io/developer/1045947341) |

## What reviewers say

### 记忆力训练营

[App page](https://appshunter.io/ios/app/id6444061624)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 月度会员 | $4.99 | one-time |
| 半年会员 | $7.99 | one-time |
| 年度会员 | $9.99 | one-time |


### 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


## Frequently asked questions

### Is 记忆力训练营 free?

记忆力训练营 is free to download, with in-app purchases available.

### 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.

### Do 记忆力训练营 or 开开心心背单词 have ads?

记忆力训练营 shows ads; 开开心心背单词 does not.

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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.*