# 滚动字 vs 单位转换器：多功能计算器和单位换算工具箱

The clearest difference is in-app purchases: 单位转换器：多功能计算器和单位换算工具箱 at none against 滚动字's 1. On price and iOS requirement there is nothing between them.

Both are free to download. 滚动字 sells 1 one-off in-app purchase. 单位转换器：多功能计算器和单位换算工具箱 asks for nothing beyond the download.

## The numbers

| Metric | 滚动字 | 单位转换器：多功能计算器和单位换算工具箱 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | — |
| Update frequency | Every 4 weeks | — |
| Size | 10 MB | 15 MB |
| Requires iOS | 16.0 | **15.6** |
| Devices | **iPhone** | — |
| Age rating | 4+ | 17+ |
| Developer | [生 赵](https://appshunter.io/developer/1048849415) | [Shenzhen Duoxiang Technology Co., Ltd](https://appshunter.io/developer/1534573413) |

## What reviewers say

### 滚动字

[App page](https://appshunter.io/ios/app/led/id6467621665)

**Features:** Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 终身 Pro | $1.99 | one-time |


### 单位转换器：多功能计算器和单位换算工具箱

[App page](https://appshunter.io/ios/app/id6744614756)

**In-app purchases:** none


## Frequently asked questions

### Is 滚动字 free?

滚动字 is free to download, with in-app purchases available.

### Is 单位转换器：多功能计算器和单位换算工具箱 free?

单位转换器：多功能计算器和单位换算工具箱 is free to download, with no in-app purchases.

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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.*