# 电子签约4.1 vs 中招互连互认

The clearest difference is update cadence: 中招互连互认 at every 2 months against 电子签约4.1's every 8 months. 电子签约4.1's advantage is iOS requirement (9.0 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.

电子签约4.1 ships an update every 8 months, 中招互连互认 every 2 months. The most recent releases landed on September 20, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | 电子签约4.1 | 中招互连互认 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 2 months** |
| Size | 73 MB | 149 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shanghai Genyan Network Technology Co., Ltd.](https://appshunter.io/developer/1108275017) | [Beijing Zhong Zhao Hu Lian Ying Yong Technology Co., Ltd.](https://appshunter.io/developer/1527772777) |

## What reviewers say

### 电子签约4.1

[App page](https://appshunter.io/ios/app/41/id1628247968)

**Features:** macOS Compatibility

**In-app purchases:** none


### 中招互连互认

[App page](https://appshunter.io/ios/app/id6544792449)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 电子签约4.1 free?

电子签约4.1 is free to download, with no in-app purchases.

### Is 中招互连互认 free?

中招互连互认 is free to download, with no in-app purchases.

### Do 电子签约4.1 or 中招互连互认 have ads?

Neither 电子签约4.1 nor 中招互连互认 shows ads.

### Which is updated more often, 电子签约4.1 or 中招互连互认?

电子签约4.1 ships an update every 8 months, and 中招互连互认 every 2 months. Most recently, 电子签约4.1 was updated on September 20, 2026 and 中招互连互认 on September 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.*