# 尺子测量 vs 氣泡水平儀

The clearest difference is in-app purchases: 氣泡水平儀 at none against 尺子测量's 5. 尺子测量's advantage is iOS requirement (11.0 vs 13.0). On price, ads and device support there is nothing between them.

Both are free to download. 尺子测量 sells 5 in-app purchases, starting at $1.99 per 7 days. 氣泡水平儀 asks for nothing beyond the download.

## The numbers

| Metric | 尺子测量 | 氣泡水平儀 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Weekly | — |
| Size | 30 MB | 1 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [然 杨](https://appshunter.io/developer/1630415499) | [KUN HONG LAI](https://appshunter.io/developer/1497544256) |

## What reviewers say

### 尺子测量

[App page](https://appshunter.io/ios/app/and/id6444145798)

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 罄如纤尺子测量：周高级订阅服务 | $1.99 | per 7 days |
| 尺子测量：周高级订阅服务 | $2.99 | per 7 days |
| 罄如纤尺子测量：季度高级订阅服务 | $14.99 | per 3 months |
| 尺子测量：季度高级服务订阅 | $24.99 | per 3 months |
| 尺子测量：季度高级订阅服务 | $30.99 | per 3 months |


### 氣泡水平儀

[App page](https://appshunter.io/ios/app/id6475026719)

**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 氣泡水平儀 free?

氣泡水平儀 is free to download, with no in-app purchases.

### Do 尺子测量 or 氣泡水平儀 have ads?

Neither 尺子测量 nor 氣泡水平儀 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.*