# Measure 3D Pro - AR Ruler — AR Tools To Measure the World

> Augmented reality app for measuring real-world lengths, areas, and volumes. (iPhone/iPad app by Mapletree Apps.)

- Source: https://appshunter.io/ios/app/measure-3d-pro-ar-ruler/id1254984021 (this page in markdown: same URL + `.md`)
- Developer: [Mapletree Apps](https://appshunter.io/developer/875137252)
- Category: Utilities, Business
- Price: $9.99
- Rating: 4.30/5 from 339 App Store ratings · 70 written reviews indexed
- Age rating: 4+
- Requires: iOS 11.0 · 31 MB
- Languages: Korean, German (Germany), Russian, European Spanish, American English, Italian, Japanese, Chinese (Simplified, China), Chinese (Traditional, Taiwan), European Portuguese and 1 more
- Released: 2017-09-26
- Data updated: 2026-09-09
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/measure-3d-pro-ar-ruler/id1254984021/reviews.md

## What is Measure 3D Pro?

Measure Length, Area and Volume of any shape in real world, using augmented reality. Best AR Ruler in the app store.
Point the camera on the floor or wall and tap on screen. Measure 3D will instantly calculate the length and area. You can even convert any measurement to 3D and measure its volume. 

It is Essential tool for all professionals including architects, designers,  contractors, realtors and engineers.

Now, you don't need to carry a ruler or a laser rangefinder. 

Total 9 tools available.

1. Distance Tool
- Measure Distance from iPhone to any object on camera

2. Ruler Tool
- Measure distances on any horizontal or vertical planes
- Measure your floor, desk, wall, room and even your whole house

3. Rectangle/Cube Tool, Level Tool
- Measure any rectangle on floor, desk or wall
- Measure Length/Width/Height, Area and Volume
- Can be used as laser level on vertical wall
- Examples: Measure your window on wall, door size. Measure wall area for painting it. Measure floor size for carpetting. 

4. Circle/Cylinder Tool
- Measure any circle on floor, desk or wall
- Measure Radius/Height, Area and Volume
- Examples: Any cylinder shapes like cans, bottles, cups, chairs

5. Polygon/Extrude Tool
- Measure your room by just tapping every corners of your room
- Measure total length, perimeter, area and volume
- Examples: Measure room volume to decide your Air Conditioner size

6. Curve/Extrude Tool
- Measure any shape of object by drawing on screen with your finger
- If the area is big, just walk with your iPhone/iPad pointing down 
- Measure total distance or perimeter, area and volume
- Examples: Measure your garden size by walking arount it. Measure your walking distance and covered area.

7. Height Tool
- Accurately measure object's height
- Measure from the ground to any height

8. Person Height Tool
- Measure the height of your kids and friends
- Tab a person's foot and move camera to faces. Artificial Intelligence will find faces and measure the heights automatically.
- When everyone is standing side by side, their height is displayed above their face. It's really fun!

9. Measures distance between eyes
- on iPhone X/XS/XS Max/XR or devices with TrueDepth camera

10. Save all your Measurements in the phone
- Store and carry all your measurements in your iPhone/iPad
- Reference all your measurements at any time, any place

11. Share/Print using PDF or photo
- You can edit PDF file before export, just tap any text or measurement


How to use the app
1. Point the camera to a planar plane - a floor or a wall. Move camera slowly until a white rectangle appears
2. Tap on screen, move and then tap again.
3. Tap Capture button

Notes.
1. App supports both Metric system(meter, centimeter, liter) and Imperial/US(feet, inches, gallon) - Total 9 length units, 8 area units and 18 volume units.
2. App works on any devices with ARKit support - A9 processor or later

## Key features

- Measure length, area, and volume in AR
- Multiple measurement tools (distance, rectangle, circle, polygon, curve)
- Automatic person height measurement
- Save and share measurements via PDF/photo
- Supports metric and imperial units
- ARKit compatible

## What do users think of Measure 3D Pro?

Overall sentiment: negative

**Pros**

- 💡 Innovative AR measuring technology
- 🎯 Rich feature set with multiple measurement tools
- ⚡ Compact app size with extensive functionality
- 📏 Accurate measurements once user learns the interface
- 💰 Affordable pricing compared to similar apps
- 🔧 Useful specialized tools (height tracking, area calculation)

**Cons**

- 🐛 Frequent crashes and stability issues
- ❌ Poor surface/plane detection
- 📐 Inconsistent and inaccurate measurements
- 😕 Steep learning curve and non-intuitive interface
- 📖 Inadequate documentation and tutorial
- 🔍 Difficulty recognizing surfaces in various lighting conditions
- 📱 Compatibility issues with specific devices
- 🎬 Misleading marketing videos vs actual functionality

**Commonly reported bugs**

- App crashes immediately on launch
- Crashes after surface detection
- Crashes during or after measurements
- App locks up iPad/iPhone
- World tracking failure errors
- Poor plane recognition
- Measurement accuracy off by 3-6 feet on longer distances
- Measurement accuracy off by 1-2 inches on shorter distances
- Device compatibility issues (iPhone 6 Plus, iPhone 7, iPad Pro, iPhone X)

**Most requested features**

- Improved zoom controls for small spaces
- Better crosshair targeting system
- Comprehensive manual and in-app guidance
- Export measurements in standard formats
- Stabilization for image shake reduction
- Optimization for iPhone X notch and newer devices

## Recent user reviews (10 of 70)

All indexed reviews: https://appshunter.io/ios/app/measure-3d-pro-ar-ruler/id1254984021/reviews.md

### 1/5 — Fonctionne pas très bien

*2023-02-17*

Fonctionne très mal ne donne absolument pas les bonnes dimensions

### 1/5 — Not good

*2020-12-12, version 1.63*

I can’t say anything good about this app. Purchased his morning ,tried it out for an hour and the app was not responsive on the iPad.

### 1/5 — Disappointed

*2020-08-28, version 1.63*

Locked up my IPad Pro

### 1/5 — Doesn’t work.

*2019-07-27, version 1.63*

Literally just downloaded the app. Went threw tutorial tried to measure and it said “sorry”. “World tracking failed”. “Try resetting or just quit the app”. Haha. JUNK. don’t waste your time. I want my money back.

### 1/5 — Glitches prone

*2019-06-11*

When I click a photo and save it. In the collection section there is just a white screen that appears, though the measurements are shown but their is no photo. Just a white screen.

### 1/5 — Great idea not workable

*2018-12-27, version 1.61*

I am an old style computer user, and a modern programmer that writes manuals. 

I viewed your tutorials. Thanks for taking the time and effort to do this.

I tried measuring a door in our house many times. Never worked. I I cannot measure under good situation like that, not going to be useful. Much faster to get a tape measure, or in other cases use some geometry to calculate the measurements.

### 3/5 — Not Practical

*2018-11-30, version 1.61*

App crashes when surface is detected, even after recent update.  On iPhone 7 with latest software update.  I work in a metals distribution warehouse and have to carry a 60’ tape measure with me constantly to tell the difference in-between 55’ and 60’ beams.  When the app did work it was always at least 3’ to 6’ off, even after a perfect surface detection over a span of 50 to 60’.  Up close it seems to work ok, but is off a good 1 to 2” sometimes.  I still use it to get a general sense of sq footage when figuring steel plate for processing work comparing what I have on hand to work with, but practical accuracy is not there with really any VR app I have used yet, not just this one.

### 1/5 — 直ぐ固まる

*2018-10-24*

起動して直ぐ固まり反応しなくなる。
iPhone8 11.3

### 1/5 — I can’t open application

*2018-10-17, version 1.48*

Application is not working, as many times I try to open , application shuts me down
I tried couple times to reinstall it and it’s not working

### 1/5 — App closes immediately.

*2018-10-17, version 1.48*

This app won't open. Unusable for me.

## Frequently asked questions about Measure 3D Pro

### What can I measure with this app?

You can measure lengths, areas, and volumes of various shapes in the real world using augmented reality. This includes distances between objects, dimensions of rectangles and circles, room sizes, and even the height of people.

### How accurate are the measurements?

The app uses ARKit for augmented reality measurements, which provides good accuracy for most common use cases. For optimal results, ensure you have good lighting and point the camera slowly at planar surfaces.

### Is this app free to use?

Yes, the app is available for free. It does not contain in-app purchases or advertisements, allowing for an uninterrupted measurement experience.

### What devices are compatible with this app?

The app works on any devices that support ARKit, which generally means devices with an A9 processor or later. This includes most modern iPhones and iPads.

### Can I save and share my measurements?

Yes, you can save all your measurements directly on your phone for easy reference at any time. Additionally, you can share your measurements using PDF files or photos, with the ability to edit text and measurements before exporting.

## Version history (last 5 releases)

### 1.63 — 2019-05-11

Measures distance between eyes (on iPhone X/XS/XS Max/XR or devices with TrueDepth camera)

### 1.61 — 2018-11-24

Measures distance between eyes (on iPhone X/XS/XS Max/XR or devices with TrueDepth camera)

### 1.60 — 2018-11-21

Measures distance between eyes (on iPhone X/XS/XS Max/XR or devices with TrueDepth camera)

### 1.55 — 2018-10-22

Measures distance between eyes (on iPhone X/XS/XS Max/XR or devices with TrueDepth camera)

### 1.54 — 2018-10-18

Performance improved.
"Turn on the flashlight" added in the Menu

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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 2026-09-09.*