# 中国联通 vs BMD数字证书

The clearest difference is review sentiment: 中国联通 at 34% against BMD数字证书's 0%. 中国联通 also leads on update cadence (every 3 weeks vs every 4 months). BMD数字证书's advantage is iOS requirement (8.0 vs 13.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

中国联通 ships an update every 3 weeks, BMD数字证书 every 4 months. The most recent releases landed on September 23, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | 中国联通 | BMD数字证书 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.5 (1.3K ratings)](https://appshunter.io/ios/app/id416457422/reviews)** | — |
| Number of ratings | **1.3K** | — |
| Positive reviews | **34.1% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 4 months |
| Monetization | — | Free |
| Size | 256 MB | 12 MB |
| Requires iOS | 13.0 | **8.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [China United Network Communications Corporation Limited](https://appshunter.io/developer/674392285) | [Shanghai F-road Commerce Service Co.,Ltd](https://appshunter.io/developer/561883025) |

## 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


### BMD数字证书

[App page](https://appshunter.io/ios/app/bmd/id1619735633)

Manage your thin film hardware digital certificates with this tool. It offers efficient, convenient, and professional management for signing, password changes, and COS operations.

**Highlights:** Hardware digital certificate management, Signing management, Password management, COS management, Efficient and convenient tool, Simple operation

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 中国联通 free?

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

### Is BMD数字证书 free?

BMD数字证书 is free to download, with no in-app purchases.

### Do 中国联通 or BMD数字证书 have ads?

Neither 中国联通 nor BMD数字证书 shows ads.

### Which is updated more often, 中国联通 or BMD数字证书?

中国联通 ships an update every 3 weeks, and BMD数字证书 every 4 months. Most recently, 中国联通 was updated on September 23, 2026 and BMD数字证书 on September 14, 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.*