# 协同签名 vs MedCite学术引擎

The clearest difference is in-app purchases: 协同签名 at none against MedCite学术引擎's 9. 协同签名 also leads on iOS requirement (13 vs 15.6). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. MedCite学术引擎 sells 9 one-off in-app purchases. 协同签名 asks for nothing beyond the download.

协同签名 ships an update every 5 weeks, MedCite学术引擎 every 6 weeks. Both last shipped on October 24, 2026.

## The numbers

| Metric | 协同签名 | MedCite学术引擎 |
| --- | --- | --- |
| 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** | Yes |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 6 weeks |
| Monetization | — | Free |
| Size | 62 MB | 21 MB |
| Requires iOS | **13** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Beijing Certificate Authority Co., Ltd.](https://appshunter.io/developer/1074200787) | [Wuhan Cantian Dashu Information Technology Co., Ltd.](https://appshunter.io/developer/1732966453) |

## 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


### MedCite学术引擎

[App page](https://appshunter.io/ios/app/medcite/id6478475576)

This professional literature search tool helps researchers and students efficiently find and manage academic papers. It offers advanced PubMed search, AI-powered journal recommendations, PDF translation, and cloud-based note-taking.

**Highlights:** PubMed literature search, Journal impact factor display, AI journal selection, Personalized literature subscription, PDF translation, Cloud note management, AI academic assistant

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

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1天会员 | $0.99 | one-time |
| 综述包1篇 | $0.99 | one-time |
| PDF翻译5篇 | $0.99 | one-time |
| AI审稿1次 | $0.99 | one-time |
| 综述包5篇 | $3.99 | one-time |
| 综述包10篇 | $5.99 | one-time |
| 3 个月会员 | $9.99 | one-time |
| 1年会员 | $19.99 | one-time |
| 终身会员 | $99.99 | one-time |


## Frequently asked questions

### Is 协同签名 free?

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

### Is MedCite学术引擎 free?

MedCite学术引擎 is free to download, with in-app purchases available.

### Do 协同签名 or MedCite学术引擎 have ads?

Neither 协同签名 nor MedCite学术引擎 shows ads.

### Which is updated more often, 协同签名 or MedCite学术引擎?

协同签名 ships an update every 5 weeks, and MedCite学术引擎 every 6 weeks. Most recently, 协同签名 was updated on October 24, 2026 and MedCite学术引擎 on October 24, 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.*