# 數學工具：探究四邊形 vs CheckHW2

The clearest difference is price: 數學工具：探究四邊形 at Free against CheckHW2's $0.99. 數學工具：探究四邊形 also leads on iOS requirement (6.0 vs 17.0). On ads, in-app purchases and device support there is nothing between them.

數學工具：探究四邊形 is free to download; CheckHW2 costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | 數學工具：探究四邊形 | CheckHW2 |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 2 weeks |
| Size | 5 MB | 3 MB |
| Requires iOS | **6.0** | 17.0 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Pearson Education Asia Limited](https://appshunter.io/developer/429357888) | [Shih Yuen Hsiao](https://appshunter.io/developer/1685781048) |

## What reviewers say

### 數學工具：探究四邊形

[App page](https://appshunter.io/ios/app/id1021469207)

**In-app purchases:** none


### CheckHW2

[App page](https://appshunter.io/ios/app/checkhw2/id6804171643)

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

**In-app purchases:** none


## Frequently asked questions

### Is 數學工具：探究四邊形 free?

數學工具：探究四邊形 is free to download, with no in-app purchases.

### Is CheckHW2 free?

CheckHW2 costs $0.99, with no in-app purchases.

### Do 數學工具：探究四邊形 or CheckHW2 have ads?

Neither 數學工具：探究四邊形 nor CheckHW2 shows ads.

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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.*