# 双元E+ vs 注册化工工程师题库

The clearest difference is in-app purchases: 双元E+ at none against 注册化工工程师题库's 8. 双元E+ also leads on device support. On price and iOS requirement there is nothing between them.

Both are free to download. 注册化工工程师题库 sells 8 one-off in-app purchases. 双元E+ asks for nothing beyond the download.

## The numbers

| Metric | 双元E+ | 注册化工工程师题库 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (2 ratings)](https://appshunter.io/ios/app/e-plus/id1483094594/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | **No** | Yes |
| Ads | No | — |
| Update frequency | Every 16 months | — |
| Monetization | Free | — |
| Size | 48 MB | 87 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 4+ | 4+ |
| Developer | [Shanghai Yusu Information Technology Co.,Ltd.](https://appshunter.io/developer/1395703934) | [长沙优学互动信息技术有限公司](https://appshunter.io/developer/1247376685) |

## What reviewers say

### 双元E+

[App page](https://appshunter.io/ios/app/e-plus/id1483094594)

This app extends a smart campus system, allowing students, teachers, and mentors to manage and engage in educational activities remotely. Users receive real-time event notifications and can access learning progress, course selection, and feedback features on their mobile devices.

**Highlights:** Remote management and teaching, Real-time event notifications, Student progress tracking, Course selection and feedback, Communication platform

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 双元E+ free?

双元E+ is free to download, with no in-app purchases.

### 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.*