# 掌上微试 vs 艾瑞嘉CTMS

The clearest difference is update cadence: 掌上微试 at monthly against 艾瑞嘉CTMS's every 2 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.

掌上微试 ships an update monthly, 艾瑞嘉CTMS every 2 months. The most recent releases landed on September 23, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | 掌上微试 | 艾瑞嘉CTMS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Size | 73 MB | 6 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 12+ | 17+ |
| Developer | [Beijing CTSmed Co.,Ltd](https://appshunter.io/developer/1036091389) | [UNIMED SCIENTIFIC,Inc](https://appshunter.io/developer/981824434) |

## What reviewers say

### 掌上微试

[App page](https://appshunter.io/ios/app/id1036091390)

**Features:** Vision Pro support

**In-app purchases:** none


### 艾瑞嘉CTMS

[App page](https://appshunter.io/ios/app/ctms/id1551759482)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 掌上微试 free?

掌上微试 is free to download, with no in-app purchases.

### Is 艾瑞嘉CTMS free?

艾瑞嘉CTMS is free to download, with no in-app purchases.

### Do 掌上微试 or 艾瑞嘉CTMS have ads?

Neither 掌上微试 nor 艾瑞嘉CTMS shows ads.

### Which is updated more often, 掌上微试 or 艾瑞嘉CTMS?

掌上微试 ships an update monthly, and 艾瑞嘉CTMS every 2 months. Most recently, 掌上微试 was updated on September 23, 2026 and 艾瑞嘉CTMS on September 17, 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.*