# 贵通三元催化 vs 卡声

The clearest difference is in-app purchases: 卡声 at none against 贵通三元催化's 5. 卡声 also leads on update cadence (every 3 weeks vs every 9 months). 贵通三元催化's advantage is iOS requirement (9.0 vs 13.0). On price, ads and device support there is nothing between them.

Both are free to download. 贵通三元催化 sells 5 one-off in-app purchases. 卡声 asks for nothing beyond the download.

贵通三元催化 ships an update every 9 months, 卡声 every 3 weeks. The most recent releases landed on October 6, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | 贵通三元催化 | 卡声 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 3 weeks** |
| Size | 12 MB | 98 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [浩 兰](https://appshunter.io/developer/1549614818) | [Beijing Haikui Technology Co., Ltd.](https://appshunter.io/developer/1140840856) |

## What reviewers say

### 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 |


### 卡声

[App page](https://appshunter.io/ios/app/id6477341396)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 贵通三元催化 free?

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

### Is 卡声 free?

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

### Do 贵通三元催化 or 卡声 have ads?

Neither 贵通三元催化 nor 卡声 shows ads.

### Which is updated more often, 贵通三元催化 or 卡声?

贵通三元催化 ships an update every 9 months, and 卡声 every 3 weeks. Most recently, 贵通三元催化 was updated on October 6, 2026 and 卡声 on October 19, 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.*