# QualityIn质量学院 vs 注册计量师易题库

The clearest difference is update cadence: QualityIn质量学院 at every 3 weeks against 注册计量师易题库's every 8 months. QualityIn质量学院 also leads on iOS requirement (9.0 vs 11). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. QualityIn质量学院 sells 4 one-off in-app purchases and 注册计量师易题库 sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

QualityIn质量学院 ships an update every 3 weeks, 注册计量师易题库 every 8 months. The most recent releases landed on October 12, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | QualityIn质量学院 | 注册计量师易题库 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 8 months |
| Monetization | — | Free |
| Size | 73 MB | 43 MB |
| Requires iOS | **9.0** | 11 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [质上科技服务(北京)有限公司](https://appshunter.io/developer/1169262769) | [红梅 李](https://appshunter.io/developer/1691801179) |

## 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 |


### 注册计量师易题库

[App page](https://appshunter.io/ios/app/2026/id6474110732)

This app provides a comprehensive question bank for the Certified Metering Engineer exam. It offers practice tests, mock exams, and a mistake notebook to help users efficiently prepare and improve their test-taking skills.

**Highlights:** Comprehensive question bank, Real-time updates with mock papers, Categorized practice by knowledge points, Mock exams and random question generation, Integrated mistake notebook, Search function for questions, Learning progress tracking

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 注册计量师题库3个月会员 | $2.99 | one-time |
| 注册计量师题库9个月会员 | $3.99 | one-time |
| 注册计量师题库18个月会员 | $6.99 | one-time |
| 注册计量师题库24个月会员 | $12.99 | 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 注册计量师易题库 free?

注册计量师易题库 is free to download, with in-app purchases available.

### Do QualityIn质量学院 or 注册计量师易题库 have ads?

Neither QualityIn质量学院 nor 注册计量师易题库 shows ads.

### Which is updated more often, QualityIn质量学院 or 注册计量师易题库?

QualityIn质量学院 ships an update every 3 weeks, and 注册计量师易题库 every 8 months. Most recently, QualityIn质量学院 was updated on October 12, 2026 and 注册计量师易题库 on October 16, 2026.

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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.*