# 开开心心背单词 vs Full Score Grammar

The clearest difference is in-app purchases: 开开心心背单词 at none against Full Score Grammar's 4. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Full Score Grammar sells 4 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 | Full Score Grammar |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Monthly |
| Size | 47 MB | 30 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [光平 王](https://appshunter.io/developer/1045947341) | [绍权 刘](https://appshunter.io/developer/1774060504) |

## 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


### Full Score Grammar

[App page](https://appshunter.io/ios/app/full-score-grammar/id6739614903)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1个月会员 | $1.99 | one-time |
| One Month VIP | $3.99 | one-time |
| One Year VIP | $14.99 | one-time |
| Lifetime VIP | $24.99 | 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 Full Score Grammar free?

Full Score Grammar is free to download, with in-app purchases available.

### Do 开开心心背单词 or Full Score Grammar have ads?

Neither 开开心心背单词 nor Full Score Grammar 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.*