# 鲁班尺 Pro vs ArtPDF

The clearest difference is price: ArtPDF at Free against 鲁班尺 Pro's $19.99. ArtPDF also leads on update cadence (every 2 weeks vs every 5 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

ArtPDF is free to download; 鲁班尺 Pro costs $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.

鲁班尺 Pro ships an update every 5 months, ArtPDF every 2 weeks. The most recent releases landed on September 13, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | 鲁班尺 Pro | ArtPDF |
| --- | --- | --- |
| Price | $19.99 | **Free** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 2 weeks** |
| Monetization | Paid | — |
| Size | 105 MB | 39 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [桐明 陈](https://appshunter.io/developer/1197339496) | [Shanghai Xijing Art Co., Ltd.](https://appshunter.io/developer/1769565752) |

## What reviewers say

### 鲁班尺 Pro

[App page](https://appshunter.io/ios/app/pro/id1375474107)

This app transforms your phone into a professional measuring tool using AR. It helps test property layouts for buying, renting, or renovating, and provides auspicious meanings for measurements. Supports custom and standard ruler lengths, various units, and CAD file viewing.

**Highlights:** AR measurement with auspicious meanings, Customizable ruler lengths, Support for multiple measurement units, CAD file viewing (DWG compatibility), Area measurement (map, walking, driving), Real-time data saving

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

**In-app purchases:** none


### ArtPDF

[App page](https://appshunter.io/ios/app/artpdf/id6639613948)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 鲁班尺 Pro free?

鲁班尺 Pro costs $19.99, with no in-app purchases.

### Is ArtPDF free?

ArtPDF is free to download, with no in-app purchases.

### Do 鲁班尺 Pro or ArtPDF have ads?

Neither 鲁班尺 Pro nor ArtPDF shows ads.

### Which is updated more often, 鲁班尺 Pro or ArtPDF?

鲁班尺 Pro ships an update every 5 months, and ArtPDF every 2 weeks. Most recently, 鲁班尺 Pro was updated on September 13, 2026 and ArtPDF on September 10, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*