# AR鲁班尺 vs Readonly

The clearest difference is price: Readonly at Free against AR鲁班尺's $0.29. Readonly also leads on update cadence (every 3 weeks vs every 4 months). AR鲁班尺's advantage is rating (4.9 vs 4.4) and ratings volume (82 vs 15). On review sentiment, ads, in-app purchases and device support there is nothing between them.

Readonly 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 Readonly sells 2 one-off in-app purchases. 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 4.4. That said, the two scores are not equally well evidenced: AR鲁班尺 has 82 ratings behind it against 15, so its average is the more settled of the two. Written reviews complicate that: 94% of AR鲁班尺's written reviews are positive against 100% of Readonly's, so the app with the better star average is not the one people write more warmly about.

AR鲁班尺 ships an update every 4 months, Readonly every 3 weeks. The most recent releases landed on October 16, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | AR鲁班尺 | Readonly |
| --- | --- | --- |
| Price | $0.29 | **Free** |
| Rating | **[4.9 (82 ratings)](https://appshunter.io/ios/app/ar/id1384164285/reviews)** | [4.4 (15 ratings)](https://appshunter.io/ios/app/readonly-read-it-later/id6452241434/reviews) |
| Number of ratings | **82** | 15 |
| Positive reviews | 93.6% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 weeks** |
| Monetization | Subscription | **Free with in-app purchases** |
| Size | 105 MB | 9 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [桐明 陈](https://appshunter.io/developer/1197339496) | [龙 陈](https://appshunter.io/developer/1680445870) |

## 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 |


### Readonly

[App page](https://appshunter.io/ios/app/readonly-read-it-later/id6452241434)

Save articles from other apps to read later in a comfortable, distraction-free environment. Organize your saved content with tags, highlight key passages, and add notes for deeper comprehension. Customize the reading experience with various themes and layout adjustments.

**Highlights:** Quickly save articles from other apps, Highlight text and add notes, Organize articles with tags, Customize reading themes and layout, Synchronize data via iCloud, Export articles in Markdown format

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Permanent Purchase(iOS) | $2.99 | one-time |
| 永久购买（macOS） | $2.99 | 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 Readonly free?

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

### Which has better reviews, AR鲁班尺 or Readonly?

AR鲁班尺 is rated higher. AR鲁班尺 averages 4.9 out of 5 from 82 ratings, while Readonly averages 4.4 from 15 ratings.

### Do AR鲁班尺 or Readonly have ads?

Neither AR鲁班尺 nor Readonly shows ads.

### Which is updated more often, AR鲁班尺 or Readonly?

AR鲁班尺 ships an update every 4 months, and Readonly every 3 weeks. Most recently, AR鲁班尺 was updated on October 16, 2026 and Readonly on September 30, 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.*