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VisualRuler: Photo Ruler

VisualRuler: Photo Ruler

Precision Ruler in Your Wallet

0 ratings
67 reviews
🔧 Utilities
📷 Photo & Video
$1.99 $0.99

Lowest price: Free 3 years ago (-100%)

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Price history

Details

  • Released
  • Updated
  • July 29, 2016
  • June 3, 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
Show original description

What's New in VisualRuler

3.5

June 3, 2026

VisualRuler 4 is a complete rebuild from the ground up. • Redesigned from scratch for a cleaner, faster and more intuitive measuring workflow • Smarter card detection with real time confidence feedback • Instant auto lock freezes the frame automatically when the card is found • Refined corner dragging lets you recalibrate at any time without losing measurements • Support for both metric and imperial units • Photo library import lets you measure from existing photos, not just live camera • Built for iOS 18 and optimized for the latest iPhones and iPads

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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

FAKE APP!!!

This is a total rip off and needs to be taken off the app store!
bigpete51abigpete51a
See 62 more reviews

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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.