# AR鲁班尺 vs PDF Factory Plus

The clearest difference is review sentiment: AR鲁班尺 at 94% against PDF Factory Plus's 25%. AR鲁班尺 also leads on update cadence (every 4 months vs every 26 months) and rating (4.9 vs 4.7). PDF Factory Plus's advantage is price (Free vs $0.29). On ads, in-app purchases and device support there is nothing between them.

PDF Factory Plus is free to download; AR鲁班尺 costs $0.29 up front. AR鲁班尺 sells 7 in-app purchases, starting at $4.99 per month and PDF Factory Plus sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

AR鲁班尺 holds the better App Store score, 4.9 against 4.7. That said, the two scores are not equally well evidenced: AR鲁班尺 has 82 ratings behind it against 10, so its average is the more settled of the two. Written reviews point the same way: 94% of AR鲁班尺's written reviews are positive against 25% of PDF Factory Plus's.

AR鲁班尺 ships an update every 4 months, PDF Factory Plus every 26 months. The most recent releases landed on September 26, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | AR鲁班尺 | PDF Factory Plus |
| --- | --- | --- |
| Price | $0.29 | **Free** |
| Rating | **[4.9 (82 ratings)](https://appshunter.io/ios/app/ar/id1384164285/reviews)** | [4.7 (10 ratings)](https://appshunter.io/ios/app/pdf-factory-plus/id1663406658/reviews) |
| Number of ratings | **82** | 10 |
| Positive reviews | **93.6% of reviews** | 25.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 26 months |
| Monetization | Subscription | **Free with in-app purchases** |
| Size | 105 MB | 61 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [桐明 陈](https://appshunter.io/developer/1197339496) | [路 张](https://appshunter.io/developer/562716999) |

## What reviewers say

### AR鲁班尺

[App page](https://appshunter.io/ios/app/ar/id1384164285)

This app transforms your phone into a digital measuring tool, ideal for home buying, renting, and renovation. It offers customizable ruler lengths, unit conversions, and the ability to view CAD files and create floor plans. It also includes a feature to measure land area on a map.

**Highlights:** AR measurement with auspicious meanings, Customizable and preset ruler lengths, Multiple measurement units, View and analyze CAD files, Create floor plans, Map-based land area measurement

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 月VIP会员 | $4.99 | per month |
| 年VIP会员 | $12.99 | per year |
| 移除广告 | $3.99 | one-time |
| 最长测量长度为2千米 | $4.99 | one-time |
| 46.08厘米尺长 | $4.99 | one-time |
| 50.4厘米尺长 | $4.99 | one-time |
| 解锁所有功能 | $19.99 | one-time |


### PDF Factory Plus

[App page](https://appshunter.io/ios/app/pdf-factory-plus/id1663406658)

This app offers a comprehensive suite of local PDF processing tools, ensuring your files remain secure and private. It provides intuitive features for editing, converting, merging, and protecting PDF documents without requiring an internet connection or account creation.

**Highlights:** Local PDF processing for enhanced security, Password protection and decryption, Page deletion and extraction, Merge multiple PDFs, Image and XPS to PDF conversion, PDF repair and linearization, PDF to scanned file conversion

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PDF Factory Plus | Free | one-time |


## Frequently asked questions

### Is AR鲁班尺 free?

AR鲁班尺 costs $0.29, and also offers in-app purchases.

### Is PDF Factory Plus free?

PDF Factory Plus is free to download, with in-app purchases available.

### Which has better reviews, AR鲁班尺 or PDF Factory Plus?

AR鲁班尺 is rated higher. AR鲁班尺 averages 4.9 out of 5 from 82 ratings, while PDF Factory Plus averages 4.7 from 10 ratings.

### Do AR鲁班尺 or PDF Factory Plus have ads?

Neither AR鲁班尺 nor PDF Factory Plus shows ads.

### Which is updated more often, AR鲁班尺 or PDF Factory Plus?

AR鲁班尺 ships an update every 4 months, and PDF Factory Plus every 26 months. Most recently, AR鲁班尺 was updated on September 26, 2026 and PDF Factory Plus on June 1, 2026.

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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.*