# 中国联通 vs CAD看图专业版

The clearest difference is in-app purchases: 中国联通 at none against CAD看图专业版's 7. 中国联通 also leads on update cadence (every 3 weeks vs every 3 months). CAD看图专业版's advantage is iOS requirement (11.0 vs 13.0). On price, ads and device support there is nothing between them.

Both are free to download. CAD看图专业版 sells 7 in-app purchases, starting at $3.99 per 7 days. 中国联通 asks for nothing beyond the download.

中国联通 ships an update every 3 weeks, CAD看图专业版 every 3 months. The most recent releases landed on October 26, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | 中国联通 | CAD看图专业版 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.5 (1.3K ratings)](https://appshunter.io/ios/app/id416457422/reviews)** | — |
| Number of ratings | **1.3K** | — |
| Positive reviews | 37.1% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 3 months |
| Size | 333 MB | 84 MB |
| Requires iOS | 13.0 | **11.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [China United Network Communications Corporation Limited](https://appshunter.io/developer/674392285) | [慧萍 董](https://appshunter.io/developer/1623317709) |

## What reviewers say

### 中国联通

[App page](https://appshunter.io/ios/app/id416457422)

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Convenient app
- 🚀 Fast and responsive
- 💡 Comprehensive functionality

**What reviewers complain about**

- 🐛 Frequent crashes
- 🔋 High battery consumption
- 📢 Too many ads and promotions
- 🤯 Confusing and cluttered UI
- 🔒 Privacy concerns

**Reported bugs**

- Login issues and authentication problems
- Compatibility problems with newer OS versions
- Inconsistent performance across devices

**Requested features**

- Add English language support
- Improve search and navigation
- Provide more detailed account information
- Implement dark mode option


### CAD看图专业版

[App page](https://appshunter.io/ios/app/cad/id1673682466)

**Features:** macOS Compatibility

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 周度会员 | $3.99 | per 7 days |
| 周会员 | $3.99 | per 7 days |
| 月度会员 | $6.99 | per month |
| 月会员 | $6.99 | per month |
| 季度会员 | $17.99 | per 3 months |
| 季会员 | $19.99 | per 3 months |
| 年会员 | $29.99 | per year |


## Frequently asked questions

### Is 中国联通 free?

中国联通 is free to download, with no in-app purchases.

### Is CAD看图专业版 free?

CAD看图专业版 is free to download, with in-app purchases available.

### Do 中国联通 or CAD看图专业版 have ads?

Neither 中国联通 nor CAD看图专业版 shows ads.

### Which is updated more often, 中国联通 or CAD看图专业版?

中国联通 ships an update every 3 weeks, and CAD看图专业版 every 3 months. Most recently, 中国联通 was updated on October 26, 2026 and CAD看图专业版 on October 19, 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.*