# Ruler Professional vs 尺子测量

The clearest difference is device support: Ruler Professional at 3 against 尺子测量's —. Ruler Professional also leads on iOS requirement (10.0 vs 12.0). On price and in-app purchases there is nothing between them.

Both are free to download. Ruler Professional sells 1 one-off in-app purchase and 尺子测量 sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Ruler Professional | 尺子测量 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.3 (3 ratings)](https://appshunter.io/ios/app/ruler-professional/id527471088/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 57.1% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | — |
| Update frequency | Every 6 months | — |
| Monetization | Free | — |
| Size | 7 MB | 24 MB |
| Requires iOS | **10.0** | 12.0 |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 4+ | 4+ |
| Developer | [KBIC International Ltd](https://appshunter.io/developer/505094094) | [Amritaayur Health Management Service Co.,Ltd.](https://appshunter.io/developer/1689205204) |

## What reviewers say

### Ruler Professional

[App page](https://appshunter.io/ios/app/ruler-professional/id527471088)

Transform your iOS device into a versatile measuring tool. Accurately measure lengths in both centimeters and inches using on-screen markers. Ideal for quick, on-the-go measurements.

**Highlights:** Device as a ruler, Metric and imperial units, Adjustable measurement markers, Real-time distance display

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ad Removal | $0.99 | one-time |


### 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 |


## Frequently asked questions

### Is Ruler Professional free?

Ruler Professional is free to download, with in-app purchases available.

### Is 尺子测量 free?

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

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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.*