# CRT参数选择 vs 小艾订参

The clearest difference is update cadence: 小艾订参 at every 3 weeks against CRT参数选择's every 2 months. 小艾订参 also leads on 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.

CRT参数选择 ships an update every 2 months, 小艾订参 every 3 weeks. The most recent releases landed on September 10, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | CRT参数选择 | 小艾订参 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/id6467357601/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Size | 76 MB | 58 MB |
| Requires iOS | 13.0 | **10.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 12+ |
| Developer | [德超 王](https://appshunter.io/developer/1611735879) | [Vision-X-Guangdong-Medical-Technology-Co.,Ltd.](https://appshunter.io/developer/1708528572) |

## 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


### 小艾订参

[App page](https://appshunter.io/ios/app/id6467357601)

**Features:** macOS Compatibility

**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 小艾订参 free?

小艾订参 is free to download, with no in-app purchases.

### Do CRT参数选择 or 小艾订参 have ads?

Neither CRT参数选择 nor 小艾订参 shows ads.

### Which is updated more often, CRT参数选择 or 小艾订参?

CRT参数选择 ships an update every 2 months, and 小艾订参 every 3 weeks. Most recently, CRT参数选择 was updated on September 10, 2026 and 小艾订参 on September 14, 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.*