VisualRuler: Photo Ruler

VisualRuler turns any card into a photo ruler and tape measure. Snap a picture, measure dimensions in mm, cm or inches. No LiDAR.

VisualRuler is a photo ruler and tape measure for iPhone that turns any standard card into a precise reference for real-world dimensions.

Place your bank card, transit card or library card next to furniture, clothing, packages or anything flat, take a photo and read dimensions in millimeters, centimeters or inches. No LiDAR. No depth sensor. No AR scanning. Just your iPhone and a card you already carry every day.

HOW IT WORKS

1. Place any standard card next to what you want to measure.
2. Open VisualRuler and point your camera. Card detection is instant and automatic.
3. Fine-tune the card corners with a drag for perfect precision.
4. Tap to place a line or rectangle. Read dimensions immediately.

That is it. Four steps to a real measurement, anywhere you are.

A PHOTO MEASURING TOOL FOR REAL LIFE

Measure furniture before you buy it. Check whether a shelf, frame, rug or appliance will actually fit. Get accurate package dimensions for shipping labels. Measure clothing sizes from a photo so online orders fit the first time. Capture DIY project sizes at home, in a store or on site.

Professionals rely on VisualRuler too. Architects verify site dimensions before ordering materials. Interior designers confirm furniture fit before committing. Stylists measure garment details from lookbook photos. Ecommerce sellers get accurate parcel dimensions fast. Product developers capture prototype measurements in the field.

WORKS WITHOUT LIDAR

No LiDAR sensor required. No depth camera. No special hardware at all. If your iPhone or iPad has a camera and can run VisualRuler, you can measure from photos.

WHAT YOU CAN MEASURE

Furniture, clothing, electronics, artwork, parcels, hardware parts, plant pots, books, screens and anything flat. Draw a line measurement for a single dimension or a rectangle to capture width and height at once. Switch between mm, cm and inches at any time.

WHY EVERYONE SHOULD HAVE THIS APP

• Replaces a tape measure when you cannot find one • Works without LiDAR or any depth sensor • Instant automatic card detection gets you measuring in seconds • Draggable card corners give you precise control • Millimeters, centimeters and inches with instant switching • Measure from photos already in your photo library • Fully offline and completely private

ACCURACY

Typically 1 to 3 mm for flat objects photographed straight on. Powered by the same projective geometry used in professional photogrammetry software.

PRIVACY

Zero data collection. No analytics, no crash reporting, no account, no subscription. Every photo is processed entirely on your device and never leaves it.