# 山东医师服务 vs 卓信签Pro

The clearest difference is update cadence: 山东医师服务 at fortnightly against 卓信签Pro's every 2 months. 卓信签Pro's advantage is iOS requirement (10.0 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.

山东医师服务 ships an update fortnightly, 卓信签Pro every 2 months. The most recent releases landed on June 1, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | 山东医师服务 | 卓信签Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (3 ratings)](https://appshunter.io/ios/app/id1290084338/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 2 months |
| Size | 214 MB | 12 MB |
| Requires iOS | 13.0 | **10.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [Shandong Yunzhi Health Medical Big Data Co.,Ltd](https://appshunter.io/developer/1506722983) | [Shandong Zhuoma Information Technology Co., Ltd.](https://appshunter.io/developer/1484067461) |

## What reviewers say

### 山东医师服务

[App page](https://appshunter.io/ios/app/id1290084338)

**In-app purchases:** none


### 卓信签Pro

[App page](https://appshunter.io/ios/app/pro/id1610080599)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 山东医师服务 free?

山东医师服务 is free to download, with no in-app purchases.

### Is 卓信签Pro free?

卓信签Pro is free to download, with no in-app purchases.

### Do 山东医师服务 or 卓信签Pro have ads?

Neither 山东医师服务 nor 卓信签Pro shows ads.

### Which is updated more often, 山东医师服务 or 卓信签Pro?

山东医师服务 ships an update fortnightly, and 卓信签Pro every 2 months. Most recently, 山东医师服务 was updated on June 1, 2026 and 卓信签Pro on September 15, 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.*