# 卡士学堂 vs 掌上查询器

The clearest difference is update cadence: 掌上查询器 at every 3 months against 卡士学堂's every 28 months. 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.

卡士学堂 ships an update every 28 months, 掌上查询器 every 3 months. The most recent releases landed on October 5, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | 卡士学堂 | 掌上查询器 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 28 months | **Every 3 months** |
| Size | 52 MB | 46 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [绿雪生物工程(深圳)有限公司](https://appshunter.io/developer/1172037887) | [璟 闫](https://appshunter.io/developer/1541988752) |

## What reviewers say

### 卡士学堂

[App page](https://appshunter.io/ios/app/id6448012556)

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

**In-app purchases:** none


### 掌上查询器

[App page](https://appshunter.io/ios/app/id6740133637)

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

**In-app purchases:** none


## Frequently asked questions

### Is 卡士学堂 free?

卡士学堂 is free to download, with no in-app purchases.

### Is 掌上查询器 free?

掌上查询器 is free to download, with no in-app purchases.

### Do 卡士学堂 or 掌上查询器 have ads?

Neither 卡士学堂 nor 掌上查询器 shows ads.

### Which is updated more often, 卡士学堂 or 掌上查询器?

卡士学堂 ships an update every 28 months, and 掌上查询器 every 3 months. Most recently, 卡士学堂 was updated on October 5, 2026 and 掌上查询器 on October 15, 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.*