# 用印宝3.0 vs 电子签约4.1

The clearest difference is update cadence: 用印宝3.0 at weekly against 电子签约4.1's every 8 months. 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.

用印宝3.0 ships an update weekly, 电子签约4.1 every 8 months. The most recent releases landed on September 13, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | 用印宝3.0 | 电子签约4.1 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 8 months |
| Size | 70 MB | 73 MB |
| Requires iOS | **8.0** | 9.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jiangsu Qunjie IOT Technology Co.,Ltd.](https://appshunter.io/developer/1152764505) | [Shanghai Genyan Network Technology Co., Ltd.](https://appshunter.io/developer/1108275017) |

## What reviewers say

### 用印宝3.0

[App page](https://appshunter.io/ios/app/30/id1322401807)

**Features:** macOS Compatibility

**In-app purchases:** none


### 电子签约4.1

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 用印宝3.0 free?

用印宝3.0 is free to download, with no in-app purchases.

### Is 电子签约4.1 free?

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

### Do 用印宝3.0 or 电子签约4.1 have ads?

Neither 用印宝3.0 nor 电子签约4.1 shows ads.

### Which is updated more often, 用印宝3.0 or 电子签约4.1?

用印宝3.0 ships an update weekly, and 电子签约4.1 every 8 months. Most recently, 用印宝3.0 was updated on September 13, 2026 and 电子签约4.1 on September 20, 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.*