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VisualRuler: Photo Ruler

VisualRuler: Photo Ruler

Tape Measure Using Any Card

0 ratings
67 reviews
🔧 Utilities
📷 Photo & Video
$1.99

Details

  • Released
  • Updated
  • July 29, 2016
  • October 5, 2026

Features

Developer

altaibayar tseveenbayar
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About

Transform any card in your wallet into a precision measuring tool using your iPhone camera. Simply place a card next to an object, and the app instantly calibrates to measure dimensions from a photo. It's a professional-grade measurement solution accessible to everyone.

✓Measure from photos
✓Uses wallet card as reference
✓Instant auto-detection
✓Metric and imperial units
✓Photo library support
✓No special hardware needed
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What users say about VisualRuler

Reviews of VisualRuler, a Utilities app, are mostly negative. What users like most: innovative idea for measurement, easy to use (for some). Top complaints: inaccurate measurements, does not work at all. Summarized from real user reviews.

Positive things

  • 💡Innovative idea for measurement
  • 👍Easy to use (for some)
  • ✅Accurate measurements (for some)
  • ✨Useful for reference measurements

Negative things

  • ❌Inaccurate measurements
  • ❌Does not work at all
  • ❌Automatic card detection fails
  • ❌Manual adjustment is cumbersome
  • ❌Confusing to use
  • ❌Appears to be a scam
  • ❌Measurements are always the same
  • ❌Poor translation
  • ❌Not free as advertised
  • ❌Worthless
  • ❌Useless
  • ❌Fails to cope with perspective
  • ❌Measurements are randomly wrong
  • ❌Unusable
  • ❌Poor tutorial
  • ❌Measurements are wrong by a large margin
  • ❌Imperial measurements are metric
  • ❌Fatal performance
  • ❌Not precise
  • ❌Measurements are consistently wrong
  • ❌App is a rip-off
  • ❌Crap
  • ❌Fake app

What's New in VisualRuler

3.7

October 5, 2026

VisualRuler has been rebuilt from the ground up. • New Liquid Glass design that is cleaner and faster to use • Take a photo or import one from your library • Place card corners precisely with the zoom loupe • Measure with lines and rectangles, as many as you need • Switch between mm, cm and inches at any time • Save or share your measured photo in one tap • Layouts tuned for iPhone and iPad Enjoying VisualRuler? A quick rating on the App Store really helps.

More

User reviews

Most RecentHighest RatedLowest Rated

Really useful app

This app is awesome, using my card as a reference is can give me very accurate measurements for other items on the camera.
CantuseanyofmyusualusernamesCantuseanyofmyusualusernames

Great App

Simple and Very useful...accuracy is appropriate for how easy it is to use. Nice work.
biotechnc adminbiotechnc admin

骗子

骗子
12332155801233215580

Response from developer

Dear User Thank you very much for the review and I am really sorry that the app did not met your expectations. We have done many changes and improvements to the version. Please give it a try once more Thank you again Dev

Total ripoff

It always shows the exact same size, no matter how really big is the object
Mltk96Mltk96

Response from developer

Dear User Thank you very much for the review and I am really sorry that the app did not met your expectations. We have done many changes and improvements to the version. Please give it a try once more Thank you again Dev

FAKE APP!!!

This is a total rip off and needs to be taken off the app store!
bigpete51abigpete51a

Response from developer

Dear User Thank you very much for the review and I am really sorry that the app did not met your expectations. We have done many changes and improvements to the version. Please give it a try once more Thank you again Dev

See 62 more reviews

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User experience

🐞

Reported Bugs

15 issues

Automatic card detection does not work

Bug

App does not detect the card

Bug

App does not measure objects

Bug

Measurements are always the same (8.6cm x 5.4cm)

Bug

Camera orientation issues

Bug

Numbers of size cannot be changed

Bug

Login screen freezes

Bug

Incompatible with older devices

Bug

App uses cellular data

Bug

App does not work correctly

Bug

Cannot add measurements

Bug

Confusing user interface

Bug

Inaccurate measurements

Bug

App crashes

Bug

App drains battery

Bug
✨

Requested Features

7 requests

Automatic object detection

Feature

Automatic card detection improvement

Feature

Manual adjustment improvement

Feature

Add ruler and distance markings

Feature

Support upright correction

Feature

Improve translation

Feature

Flash for better detection

Feature

FAQ

What does VisualRuler do?

VisualRuler transforms any standard card in your wallet, like a credit card, into a precision measuring tool. It allows you to measure real-world dimensions directly from a photo using your iPhone's camera, without needing any special hardware like depth sensors or LiDAR.

How accurate is VisualRuler?

The app is typically accurate within 1–3 mm for flat objects photographed straight-on. It utilizes projective geometry principles, similar to those used in professional photogrammetry, to ensure reliable measurements.

Is VisualRuler free to use?

Yes, VisualRuler is a free application. It does not have any in-app purchases, ads, or require a subscription. The app is designed to be accessible to everyone.

What devices is VisualRuler compatible with?

VisualRuler works on every iPhone and iPad. It does not require any advanced hardware like LiDAR or depth sensors, making it compatible with a wide range of Apple devices.

Can I measure objects from photos I've already taken?

Yes, VisualRuler supports photo library integration. You can import any photo you've already taken and use a card as a reference to measure objects within that image, making it versatile for various use cases.