# 互道盈力HD vs 电子签约4.1

The clearest difference is update cadence: 互道盈力HD at every 3 weeks against 电子签约4.1's every 14 months. 互道盈力HD also leads on iOS requirement (10.0 vs 15.0). 电子签约4.1's advantage is device support (3 vs 1). On price, ads and in-app purchases there is nothing between them.

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

互道盈力HD ships an update every 3 weeks, 电子签约4.1 every 14 months. The most recent releases landed on October 9, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | 互道盈力HD | 电子签约4.1 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 14 months |
| Size | 101 MB | 44 MB |
| Requires iOS | **10.0** | 15.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Shanghai Nexttao Technology Co., Ltd.](https://appshunter.io/developer/896636778) | [Shanghai Genyan Network Technology Co., Ltd.](https://appshunter.io/developer/1108275017) |

## What reviewers say

### 互道盈力HD

[App page](https://appshunter.io/ios/app/hd/id1354929187)

**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 互道盈力HD free?

互道盈力HD 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 互道盈力HD or 电子签约4.1 have ads?

Neither 互道盈力HD nor 电子签约4.1 shows ads.

### Which is updated more often, 互道盈力HD or 电子签约4.1?

互道盈力HD ships an update every 3 weeks, and 电子签约4.1 every 14 months. Most recently, 互道盈力HD was updated on October 9, 2026 and 电子签约4.1 on October 27, 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.*