# 三元催化风向标 vs 贵通三元催化

The clearest difference is ads: 贵通三元催化 at none against 三元催化风向标's shown. 贵通三元催化 also leads on iOS requirement (9.0 vs 13.0). 三元催化风向标's advantage is update cadence (every 2 months vs every 9 months). On price, in-app purchases and device support there is nothing between them.

Both are free to download. 三元催化风向标 sells 10 one-off in-app purchases and 贵通三元催化 sells 5 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

三元催化风向标 ships an update every 2 months, 贵通三元催化 every 9 months. The most recent releases landed on September 8, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | 三元催化风向标 | 贵通三元催化 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 2 months** | Every 9 months |
| Size | 35 MB | 12 MB |
| Requires iOS | 13.0 | **9.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Youyu Technology Co., Ltd.](https://appshunter.io/developer/1190014252) | [浩 兰](https://appshunter.io/developer/1549614818) |

## 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 |


### 贵通三元催化

[App page](https://appshunter.io/ios/app/id1550022825)

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1个月会员 | $9.99 | one-time |
| 3个月会员 | $25.49 | one-time |
| 6个月会员 | $51.90 | one-time |
| 年会员 | $95.00 | one-time |
| 2年会员 | $161.99 | one-time |


## 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 贵通三元催化 free?

贵通三元催化 is free to download, with in-app purchases available.

### Do 三元催化风向标 or 贵通三元催化 have ads?

三元催化风向标 shows ads; 贵通三元催化 does not.

### Which is updated more often, 三元催化风向标 or 贵通三元催化?

三元催化风向标 ships an update every 2 months, and 贵通三元催化 every 9 months. Most recently, 三元催化风向标 was updated on September 8, 2026 and 贵通三元催化 on October 6, 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.*