# RulAR - Augmented 3D Ruler — AR Distance, Volume & Capacity

> Augmented reality app for measuring distance, volume, capacity, and perimeter. (iPhone/iPad app by James Dale.)

- Source: https://appshunter.io/ios/app/rular-augmented-3d-ruler/id1287070798 (this page in markdown: same URL + `.md`)
- Developer: [James Dale](https://appshunter.io/developer/836795537)
- Category: Utilities, Productivity
- Price: Free
- Rating: 3.90/5 from 53 App Store ratings · 6 written reviews indexed
- Age rating: 4+
- Requires: iOS 11.0 · 17 MB
- Languages: American English, German (Germany), Chinese (Simplified, China)
- Released: 2017-09-20
- Data updated: 2026-06-10
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/rular-augmented-3d-ruler/id1287070798/reviews.md

## What is RulAR?

RulAR is the way to measure the world around you using your device's camera! Scans are completed using Augmented Reality.

* Save measurements with the all new History section
* Share measurements via iMessage or other apps
* New today extension & 3D Touch quick actions
* Measure the distance (length) of an object
* Calculate the volume of an object
* Calculate the capacity of an object
* Calculate the perimeter of an area

You can also choose if you wish to use the metric (metres) or imperial (feet) measurement systems!

The app features:
- Free measurement (no in-app purchases required)
- Simple to use interface
- Calculate distance, volume, capacity and perimeter
- Easy sharing abilities

## Key features

- Augmented reality measurements
- Calculate distance, volume, capacity, perimeter
- Save measurements to history
- Share measurements
- Metric and imperial units
- Today extension and 3D Touch support

## Recent user reviews (6 of 6)

All indexed reviews: https://appshunter.io/ios/app/rular-augmented-3d-ruler/id1287070798/reviews.md

### 1/5 — App Freezes

*2018-06-16, version 2.0.2*

The app freezes my entire phone every time I launch the app.

### 3/5 — Frozen

*2018-06-07, version 2.0.2*

I am amazed with the apps concept but I am having some issues with my iphone X, 
1) when i try to measure something it doesn’t give me accurate measuremnts what i got by a measuring tap! 
2) After using 2/3 minutes it freezes my phone!
3) When i close this apps it freezes my phone for almost 30 seconds!
It’s still happening after your latest update last day!

### 5/5 — Works well

*2018-06-03, version 2.0.1*

This isn't half bad. I don't know if I can use this for critical measurements but I think I can for quick and dirty measurements. Thanks dev.

**Developer response:** Thank you! That is exactly what this app is designed for 😊

### 1/5 — Bricked

*2018-06-03, version 2.0.1*

Within a minute it bricked my phone. Not sure how this won an award.

**Developer response:** Hello matthewch4,

Please tell me what device you are using so I can look into this further. Thank you.

### 1/5 — Can’t tell depth so it can’t measure

*2018-06-02, version 2.0.1*

First, try measuring a ruler to see how useless this app is. Next, it crashes hard totally freezing your phone. 

If it can’t tell depth, when you place the first point you’ll notice the point is at some arbitrary distance from you and when the second point is also at some arbitrary distance, then you’re measuring the distance between two arbitrary points in space i.e. close or far from you vs the distance between two points along a wall.

**Developer response:** Hello Chic606, the app is using Augmented Reality technology which is not always perfect. If you pan your phone around your environment, have good lighting and do not move your phone too fast, you will find improved performance. I can assure you that the app is not measuring at some arbitrary distance.

### 4/5 — Great idea but has bugs

*2018-06-02, version 2.0.1*

I was amazed by the idea. It is so simple but yet so useful. Can't believe I haven't thought of it before. The interface is well thought out and functional.
Until I clicked on the settings button, it actually froze. Also when I tried to switch to another app, it kept freezing and kept switching back to this app which was already frozen. Please fix the bugs. It is truly a great app. Good job

**Developer response:** Thank you! I will release a bug fix soon :)

## Frequently asked questions about RulAR

### What can RulAR measure?

RulAR can measure the distance (length) of an object, the volume of an object, the capacity of an object, and the perimeter of an area using your device's camera and augmented reality.

### Does RulAR require in-app purchases?

No, RulAR is completely free to use and does not require any in-app purchases for its measurement features.

### Can I save and share my measurements with RulAR?

Yes, RulAR features a History section to save your measurements and allows you to share them via iMessage or other compatible applications.

### What measurement systems does RulAR support?

RulAR supports both the metric system (metres) and the imperial system (feet) for your measurement needs.

### What devices is RulAR compatible with?

RulAR is compatible with iPhone, iPad, and iPod devices and is suitable for users aged 4 and above.

### How often is RulAR updated?

The latest version of RulAR is 2.5, and it was last updated on July 24, 2018. Users can expect updates to improve functionality and features.

### What is the user rating for RulAR?

RulAR has an average rating of 3.9 stars based on 53 ratings, indicating generally positive user experiences.

### Does RulAR offer quick access features?

Yes, RulAR includes a new Today extension and 3D Touch quick actions for convenient access to its measurement capabilities.

## Version history (last 5 releases)

### 2.5 — 2018-07-24

This app has been updated by Apple to display the Apple Watch app icon.

- New hybrid measurement system
- Internationalisation improvements 
- Improved storage system
- Added images when sharing via the iMessage app
- Added quick actions
- Added a today widget for the last measurement
- Improved accuracy of measurements
- Massive performance improvements
- Fixed a bug where the history page would allow you to delete nonexistent measurements
- New Icon
- Measurement accuracy can now be changed by the user
- Improved tutorial

### 2.1 — 2018-07-15

- Added images when sharing via the iMessage app
- Added quick actions
- Added a today widget for the last measurement
- Improved accuracy of measurements
- Massive performance improvements
- Fixed a bug where the history page would allow you to delete nonexistent measurements
- New Icon
- Measurement accuracy can now be changed by the user
- Improved tutorial

### 2.0.5 — 2018-07-13

- Measurement pictures now include distance inside the picture!
- Major Bug Squash

### 2.0.2 — 2018-06-06

Fixed a bug on iPhone X
Performance improvements
Inaccuracy warnings

### 2.0.1 — 2017-11-21

Bug Fixes. This update adds support for iPhone X, an all new history section that allows you to view previous measurements and share them, as well as alerts when RulAR may be unable to accurately measure the area around you due to lighting or fast phone movement.

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## More apps by James Dale

- [CleanSky](https://appshunter.io/ios/app/cleansky/id1495573108)

All apps by James Dale: https://appshunter.io/developer/836795537

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*