# 艾瑞嘉CTMS vs 艾小研

The clearest difference is update cadence: 艾小研 at every 3 weeks against 艾瑞嘉CTMS's every 3 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.

艾瑞嘉CTMS ships an update every 3 months, 艾小研 every 3 weeks. Both last shipped on October 24, 2026.

## The numbers

| Metric | 艾瑞嘉CTMS | 艾小研 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Size | 6 MB | 57 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [UNIMED SCIENTIFIC,Inc](https://appshunter.io/developer/981824434) | [天津艾迪研医药科技有限公司](https://appshunter.io/developer/1741878121) |

## What reviewers say

### 艾瑞嘉CTMS

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

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

**In-app purchases:** none


### 艾小研

[App page](https://appshunter.io/ios/app/id6757782705)

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

**In-app purchases:** none


## Frequently asked questions

### Is 艾瑞嘉CTMS free?

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

### Is 艾小研 free?

艾小研 is free to download, with no in-app purchases.

### Do 艾瑞嘉CTMS or 艾小研 have ads?

Neither 艾瑞嘉CTMS nor 艾小研 shows ads.

### Which is updated more often, 艾瑞嘉CTMS or 艾小研?

艾瑞嘉CTMS ships an update every 3 months, and 艾小研 every 3 weeks. Most recently, 艾瑞嘉CTMS was updated on October 24, 2026 and 艾小研 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.*