# 协同签名 vs e护考培

The clearest difference is iOS requirement: 协同签名 at 13 against e护考培's 15.6. On price, update cadence, 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.

Both ship on a similar rhythm, roughly every 5 weeks. The most recent releases landed on October 14, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | 协同签名 | e护考培 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.3 (3 ratings)](https://appshunter.io/ios/app/id1470035601/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | Every 5 weeks |
| Size | 62 MB | 30 MB |
| Requires iOS | **13** | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Beijing Certificate Authority Co., Ltd.](https://appshunter.io/developer/1074200787) | [Shandong Nursing Association](https://appshunter.io/developer/1519185535) |

## What reviewers say

### 协同签名

[App page](https://appshunter.io/ios/app/id1470035601)

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

**In-app purchases:** none


### e护考培

[App page](https://appshunter.io/ios/app/e/id1519185533)

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

**In-app purchases:** none


## Frequently asked questions

### Is 协同签名 free?

协同签名 is free to download, with no in-app purchases.

### Is e护考培 free?

e护考培 is free to download, with no in-app purchases.

### Do 协同签名 or e护考培 have ads?

Neither 协同签名 nor e护考培 shows ads.

### Which is updated more often, 协同签名 or e护考培?

协同签名 ships an update every 5 weeks, and e护考培 every 5 weeks. Most recently, 协同签名 was updated on October 14, 2026 and e护考培 on October 4, 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.*