# 中国联通 vs PDF Scanner

The clearest difference is rating: PDF Scanner at 5.0 against 中国联通's 2.5. PDF Scanner also leads on update cadence (weekly vs every 3 weeks). 中国联通's advantage is in-app purchases (none vs 39) and ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. PDF Scanner sells 31 in-app purchases, starting at $0.99 per 7 days. 中国联通 asks for nothing beyond the download.

PDF Scanner holds the better App Store score, 5.0 against 2.5. That said, the two scores are not equally well evidenced: 中国联通 has 1.3K ratings behind it against 1, so its average is the more settled of the two.

中国联通 ships an update every 3 weeks, PDF Scanner weekly. The most recent releases landed on September 26, 2026 and August 21, 2026 respectively.

## The numbers

| Metric | 中国联通 | PDF Scanner |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.5 (1.3K ratings)](https://appshunter.io/ios/app/id416457422/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/pdf-scannerscan-documents-ocr/id6444020197/reviews)** |
| Number of ratings | **1.3K** | 1 |
| Positive reviews | 34.1% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Weekly** |
| Monetization | — | Free with in-app purchases |
| Size | 333 MB | 194 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [China United Network Communications Corporation Limited](https://appshunter.io/developer/674392285) | [WANHUHOU TECHNOLOGIES LIMITED](https://appshunter.io/developer/1651573647) |

## 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


### PDF Scanner

[App page](https://appshunter.io/ios/app/pdf-scannerscan-documents-ocr/id6444020197)

Transform your phone into a smart scanner with powerful editing tools. Easily convert documents to various formats, extract text with OCR, restore old photos, and utilize AI for counting and measurement. Ideal for professionals and students needing efficient document management.

**Highlights:** Scan documents to PDF, Word, TXT, PPT, JPG, OCR text recognition and editing, Photo restoration and ID photo maker, AI counting and object measurement, Document editing (crop, rotate, highlight), Paper eraser for handwritten text removal

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

**In-app purchases (31)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 全能扫描王超级VIP会员 | $0.99 | per 7 days |
| 全能扫描王超级VIP会员 | $1.99 | per 7 days |
| 全能扫描王超级VIP会员 | $2.99 | per month |
| 全能扫描王超级VIP会员 | $3.99 | per month |
| 全能扫描王超级VIP会员 | $7.99 | per 7 days |
| AR PDF Scanner | $9.99 | per month |
| 年卡订阅 | $9.99 | per year |
| 全能扫描王超级VIP会员 | $9.99 | per 3 months |
| 季卡会员 | $14.99 | per 3 months |
| 年卡订阅 | $14.99 | per year |
| 季卡会员 | $19.99 | per 3 months |
| 年卡订阅 | $19.99 | per year |
| 全能扫描王超级VIP会员 | $19.99 | per 6 months |
| 年卡订阅 | $22.99 | per year |
| 全能扫描王超级VIP会员 | $22.99 | per 6 months |
| 年卡订阅 | $24.99 | per year |
| yearly Premium | $24.99 | per year |
| 年卡订阅 | $29.99 | per year |
| 全能扫描王超级VIP会员 | $39.99 | per year |
| 全能扫描王超级VIP会员 | $39.99 | per year |
| 全能扫描王超级VIP会员 | $39.99 | per year |
| 月卡会员 | $5.99 | one-time |
| 全能扫描王超级VIP会员 | $9.99 | one-time |
| 季卡会员 | $14.99 | one-time |
| 全能扫描王超级VIP会员 | $19.99 | one-time |
| 全能扫描王超级VIP会员 | $24.99 | one-time |
| 半年卡会员 | $24.99 | one-time |
| 手机扫描宝 | $29.99 | one-time |
| 年卡会员 | $39.99 | one-time |
| 全能扫描王超级VIP会员 | $59.99 | one-time |
| 全能扫描王超级VIP会员 | $69.99 | one-time |


## Frequently asked questions

### Is 中国联通 free?

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

### Is PDF Scanner free?

PDF Scanner is free to download, with in-app purchases available.

### Which has better reviews, 中国联通 or PDF Scanner?

PDF Scanner is rated higher. 中国联通 averages 2.5 out of 5 from 1.3K ratings, while PDF Scanner averages 5.0 from 1 ratings.

### Do 中国联通 or PDF Scanner have ads?

PDF Scanner shows ads; 中国联通 does not.

### Which is updated more often, 中国联通 or PDF Scanner?

中国联通 ships an update every 3 weeks, and PDF Scanner weekly. Most recently, 中国联通 was updated on September 26, 2026 and PDF Scanner on August 21, 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.*