# 天威诚信扫码签 vs 沪联互通

The clearest difference is update cadence: 天威诚信扫码签 at every 2 months against 沪联互通's every 9 months. 天威诚信扫码签 also leads on iOS requirement (9.0 vs 15.0). 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.

天威诚信扫码签 ships an update every 2 months, 沪联互通 every 9 months. The most recent releases landed on November 7, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | 天威诚信扫码签 | 沪联互通 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 9 months |
| Size | 11 MB | 42 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [iTrusChina Co., Ltd](https://appshunter.io/developer/730885868) | [Shanghai Electronic Certificate Authority Center Co.,LTD](https://appshunter.io/developer/924307388) |

## What reviewers say

### 天威诚信扫码签

[App page](https://appshunter.io/ios/app/id1530917027)

**Features:** macOS Compatibility

**In-app purchases:** none


### 沪联互通

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

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

**In-app purchases:** none


## Frequently asked questions

### Is 天威诚信扫码签 free?

天威诚信扫码签 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 天威诚信扫码签 or 沪联互通 have ads?

Neither 天威诚信扫码签 nor 沪联互通 shows ads.

### Which is updated more often, 天威诚信扫码签 or 沪联互通?

天威诚信扫码签 ships an update every 2 months, and 沪联互通 every 9 months. Most recently, 天威诚信扫码签 was updated on November 7, 2026 and 沪联互通 on November 3, 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.*