# 尺子测量 vs 蜻蜓商户

The clearest difference is in-app purchases: 蜻蜓商户 at none against 尺子测量's 3. 蜻蜓商户 also leads on device support. 尺子测量's advantage is iOS requirement (12.0 vs 15.6). On price there is nothing between them.

Both are free to download. 尺子测量 sells 3 in-app purchases, starting at $2.99 per month. 蜻蜓商户 asks for nothing beyond the download.

## The numbers

| Metric | 尺子测量 | 蜻蜓商户 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | — | No |
| Update frequency | — | Every 2 months |
| Size | 24 MB | 46 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | — | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Amritaayur Health Management Service Co.,Ltd.](https://appshunter.io/developer/1689205204) | [唐山蜻蜓网络科技有限公司](https://appshunter.io/developer/1841773806) |

## What reviewers say

### 尺子测量

[App page](https://appshunter.io/ios/app/id6526468871)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 月会员 | $2.99 | per month |
| 年会员 | $9.99 | per year |
| 永久会员 | $14.99 | one-time |


### 蜻蜓商户

[App page](https://appshunter.io/ios/app/id6760800613)

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

**In-app purchases:** none


## Frequently asked questions

### Is 尺子测量 free?

尺子测量 is free to download, with in-app purchases available.

### Is 蜻蜓商户 free?

蜻蜓商户 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.*