# CRT参数选择 vs EYE质控

The clearest difference is update cadence: EYE质控 at every 2 weeks against CRT参数选择'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.

CRT参数选择 ships an update every 2 months, EYE质控 every 2 weeks. The most recent releases landed on September 10, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | CRT参数选择 | EYE质控 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | — | Free |
| Size | 76 MB | 95 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 12+ |
| Developer | [德超 王](https://appshunter.io/developer/1611735879) | [复旦大学附属眼耳鼻喉科医院](https://appshunter.io/developer/1369704511) |

## What reviewers say

### CRT参数选择

[App page](https://appshunter.io/ios/app/crt/id1403633270)

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

**In-app purchases:** none


### EYE质控

[App page](https://appshunter.io/ios/app/eye/id6743211531)

This medical app serves as a platform for ophthalmologists to access conference training and quality control courses. It aims to enhance the efficiency of ophthalmic medical quality control, ensure service standards, and reduce operational risks.

**Highlights:** Conference training access, Quality control course learning, Improve medical quality control efficiency, Ensure production and service quality, Reduce human error, Lower operational risks

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

**In-app purchases:** none


## Frequently asked questions

### Is CRT参数选择 free?

CRT参数选择 is free to download, with no in-app purchases.

### Is EYE质控 free?

EYE质控 is free to download, with no in-app purchases.

### Do CRT参数选择 or EYE质控 have ads?

Neither CRT参数选择 nor EYE质控 shows ads.

### Which is updated more often, CRT参数选择 or EYE质控?

CRT参数选择 ships an update every 2 months, and EYE质控 every 2 weeks. Most recently, CRT参数选择 was updated on September 10, 2026 and EYE质控 on September 11, 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.*