# 云证签 vs 沪联互通

The clearest difference is update cadence: 云证签 at every 2 months against 沪联互通's every 4 months. 云证签 also leads on iOS requirement (11.0 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.

云证签 ships an update every 2 months, 沪联互通 every 4 months. The most recent releases landed on October 14, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | 云证签 | 沪联互通 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 4 months |
| Size | 58 MB | 29 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [中国金融认证中心](https://appshunter.io/developer/510293770) | [Shanghai Electronic Certificate Authority Center Co.,LTD](https://appshunter.io/developer/924307388) |

## What reviewers say

### 云证签

[App page](https://appshunter.io/ios/app/id1629355526)

**Features:** macOS Compatibility

**In-app purchases:** none


### 沪联互通

[App page](https://appshunter.io/ios/app/id6447675778)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 云证签 free?

云证签 is free to download, with no in-app purchases.

### Is 沪联互通 free?

沪联互通 is free to download, with no in-app purchases.

### Do 云证签 or 沪联互通 have ads?

Neither 云证签 nor 沪联互通 shows ads.

### Which is updated more often, 云证签 or 沪联互通?

云证签 ships an update every 2 months, and 沪联互通 every 4 months. Most recently, 云证签 was updated on October 14, 2026 and 沪联互通 on October 10, 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.*