# 梯形轉正方 vs 世傳科技

The clearest difference is iOS requirement: 梯形轉正方 at 9.0 against 世傳科技's 12.0. 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.

## The numbers

| Metric | 梯形轉正方 | 世傳科技 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Monthly |
| Size | 4 MB | 70 MB |
| Requires iOS | **9.0** | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [YITA HSIEH](https://appshunter.io/developer/387336625) | [Avema IOT Service Company Limited.](https://appshunter.io/developer/1607465127) |

## What reviewers say

### 梯形轉正方

[App page](https://appshunter.io/ios/app/id1574219753)

**In-app purchases:** none


### 世傳科技

[App page](https://appshunter.io/ios/app/id1663120588)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 梯形轉正方 free?

梯形轉正方 is free to download, with no in-app purchases.

### Is 世傳科技 free?

世傳科技 is free to download, with no in-app purchases.

### Do 梯形轉正方 or 世傳科技 have ads?

Neither 梯形轉正方 nor 世傳科技 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.*