# 铁市通 vs 单位换算器

The clearest difference is in-app purchases: 单位换算器 at none against 铁市通's 10. 铁市通's advantage is iOS requirement (13.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. 铁市通 sells 10 one-off in-app purchases. 单位换算器 asks for nothing beyond the download.

## The numbers

| Metric | 铁市通 | 单位换算器 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Weekly | — |
| Size | 79 MB | 8 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [立文 徐](https://appshunter.io/developer/1676873945) | [涛 范](https://appshunter.io/developer/1502057177) |

## What reviewers say

### 铁市通

[App page](https://appshunter.io/ios/app/id6446301581)

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 采购商预览权限-1月 | $29.99 | one-time |
| 采购商预览权限-6月 | $39.99 | one-time |
| 采购商预览权限-12月 | $59.99 | one-time |
| 关键词购买-1年 | $99.99 | one-time |
| 关键词购买-2年 | $129.99 | one-time |
| 产品分类广告-3月 | $149.99 | one-time |
| 关键词购买-3年 | $149.99 | one-time |
| 产品分类广告-6月 | $249.99 | one-time |
| 产品分类广告-1年 | $299.99 | one-time |
| 产品分类广告-2年 | $399.99 | one-time |


### 单位换算器

[App page](https://appshunter.io/ios/app/id6795071538)

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

**In-app purchases:** none


## Frequently asked questions

### Is 铁市通 free?

铁市通 is free to download, with in-app purchases available.

### Is 单位换算器 free?

单位换算器 is free to download, with no in-app purchases.

### Do 铁市通 or 单位换算器 have ads?

Neither 铁市通 nor 单位换算器 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.*