# 三元催化风向标 vs 车赢云平台

The clearest difference is in-app purchases: 车赢云平台 at none against 三元催化风向标's 10. 车赢云平台 also leads on ads (none vs shown) and update cadence (every 3 weeks vs every 2 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. 三元催化风向标 sells 10 one-off in-app purchases. 车赢云平台 asks for nothing beyond the download.

三元催化风向标 ships an update every 2 months, 车赢云平台 every 3 weeks. The most recent releases landed on September 8, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | 三元催化风向标 | 车赢云平台 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Size | 35 MB | 51 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Youyu Technology Co., Ltd.](https://appshunter.io/developer/1190014252) | [上海车赢信息技术有限公司](https://appshunter.io/developer/1112047146) |

## What reviewers say

### 三元催化风向标

[App page](https://appshunter.io/ios/app/id1542725614)

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Plus体验卡1天 | $3.99 | one-time |
| 初级 66次(3个月) | $19.99 | one-time |
| 初级 300次(1年) | $59.99 | one-time |
| 团队版(1个月) | $69.99 | one-time |
| 专业版Plus（2个月） | $99.99 | one-time |
| 团队版(2个月) | $129.99 | one-time |
| 专业版Plus（半年） | $249.99 | one-time |
| 团队版(半年) | $349.99 | one-time |
| 专业版Plus（1年） | $499.99 | one-time |
| 团队版（一年） | $599.99 | one-time |


### 车赢云平台

[App page](https://appshunter.io/ios/app/id1612012676)

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

**In-app purchases:** none


## Frequently asked questions

### Is 三元催化风向标 free?

三元催化风向标 is free to download, with in-app purchases available.

### Is 车赢云平台 free?

车赢云平台 is free to download, with no in-app purchases.

### Do 三元催化风向标 or 车赢云平台 have ads?

三元催化风向标 shows ads; 车赢云平台 does not.

### Which is updated more often, 三元催化风向标 or 车赢云平台?

三元催化风向标 ships an update every 2 months, and 车赢云平台 every 3 weeks. Most recently, 三元催化风向标 was updated on September 8, 2026 and 车赢云平台 on November 3, 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.*