# QualityIn质量学院 vs 注册化工工程师题库

The clearest difference is device support: QualityIn质量学院 at 2 against 注册化工工程师题库's —. QualityIn质量学院 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. QualityIn质量学院 sells 4 one-off in-app purchases and 注册化工工程师题库 sells 8 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | QualityIn质量学院 | 注册化工工程师题库 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | — |
| Update frequency | Every 3 weeks | — |
| Size | 73 MB | 87 MB |
| Requires iOS | **9.0** | 12.0 |
| Devices | **iPhone, iPod** | — |
| Age rating | 4+ | 4+ |
| Developer | [质上科技服务(北京)有限公司](https://appshunter.io/developer/1169262769) | [长沙优学互动信息技术有限公司](https://appshunter.io/developer/1247376685) |

## What reviewers say

### QualityIn质量学院

[App page](https://appshunter.io/ios/app/qualityin/id1169262770)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 6学币 | $0.99 | one-time |
| 18学币 | $2.99 | one-time |
| 50学币 | $7.99 | one-time |
| 118学币 | $17.99 | one-time |


### 注册化工工程师题库

[App page](https://appshunter.io/ios/app/id6478516651)

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1学币 | $0.99 | one-time |
| 10学币 | $0.99 | one-time |
| 40学币 | $5.99 | one-time |
| 50学币 | $6.99 | one-time |
| 100学币 | $14.99 | one-time |
| 120学币 | $17.99 | one-time |
| 150学币 | $19.99 | one-time |
| 300学币 | $39.99 | one-time |


## Frequently asked questions

### Is QualityIn质量学院 free?

QualityIn质量学院 is free to download, with in-app purchases available.

### Is 注册化工工程师题库 free?

注册化工工程师题库 is free to download, with in-app purchases available.

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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.*