# 乔登美语S测验 vs 火山检测师

The clearest difference is in-app purchases: 乔登美语S测验 at none against 火山检测师's 6. 乔登美语S测验 also leads on update cadence (every 6 weeks vs every 8 months) and iOS requirement (9.0 vs 13.0). On price, ads and device support there is nothing between them.

Both are free to download. 火山检测师 sells 6 one-off in-app purchases. 乔登美语S测验 asks for nothing beyond the download.

乔登美语S测验 ships an update every 6 weeks, 火山检测师 every 8 months. The most recent releases landed on October 10, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | 乔登美语S测验 | 火山检测师 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 8 months |
| Size | 282 MB | 220 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Chiao Li Tsai](https://appshunter.io/developer/1468064511) | [四川火山教育咨询有限公司](https://appshunter.io/developer/1573681020) |

## What reviewers say

### 乔登美语S测验

[App page](https://appshunter.io/ios/app/s/id1468064512)

**Features:** macOS Compatibility

**In-app purchases:** none


### 火山检测师

[App page](https://appshunter.io/ios/app/id1573681018)

**Features:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 6火山币 | $0.99 | one-time |
| 18火山币 | $2.99 | one-time |
| 68火山币 | $9.99 | one-time |
| 128火山币 | $19.99 | one-time |
| 268火山币 | $41.99 | one-time |
| 618火山币 | $94.99 | one-time |


## Frequently asked questions

### Is 乔登美语S测验 free?

乔登美语S测验 is free to download, with no in-app purchases.

### Is 火山检测师 free?

火山检测师 is free to download, with in-app purchases available.

### Do 乔登美语S测验 or 火山检测师 have ads?

Neither 乔登美语S测验 nor 火山检测师 shows ads.

### Which is updated more often, 乔登美语S测验 or 火山检测师?

乔登美语S测验 ships an update every 6 weeks, and 火山检测师 every 8 months. Most recently, 乔登美语S测验 was updated on October 10, 2026 and 火山检测师 on September 26, 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.*