Millimeter Pro - screen ruler 4+

measure length, angle and area

VisTech.Projects LLC

Designed for iPad

    • 4.4 • 101 Ratings
    • $3.99



Features: mm and inch, 2D area, ratio (W/H), length and angle, screen lock, circle radius, Protractor, TPI and pitch size

App blog:

Millimeter Pro is an easy-to-use and helpful measurement tool for iPhone or iPad. It uses a touch screen as a ruler or tape measure to make quick measurements, split objects into equal parts, measure object ratio (W/H), measure area, estimate diameter and angles, and split circular objects into equal parts.

Place an object on the screen and simply touch and move rulers to measure it.
You can measure in different units: MILLIMETERS or INCHES.

- mm and inch units
- 2D measurements: vertical and horizontal rulers
- area calculation
- ratio calculation (W/H)
- split linear and circular objects into equal parts
- shows the length and angle of each part
- disable/enable touch screen (freeze feature)
- diameter or radius estimation
- angle measure with Protractor / Goniometer mode
- Thread pitch gauge for TPI and pitch size measurements

Use this app in different areas to measure small objects that fit within your phone or tablet screen: jewelry, rings, stones, gem, beads, screws, bolts, buttons, nuts, knitting needles, knitting patterns, washers, insects, mosaic tile, hooks, frame wrap angle, etc.

Enjoy the app and Thank you for your interest and support!
VisTech.Projects Team

What’s New

Version 2.0.13

Bug fixes and stability improvements

Ratings and Reviews

4.4 out of 5
101 Ratings

101 Ratings

LE2D3R ,

Very nice app

Could be better if there is another way to increase/decrease values other than touch screen as I always wast my time trying to got the correct measure by touch screen

notjustus_aw ,

Very handy for measuring small parts

I build bikes and deal with several hundred small parts, mostly in mm, this is great for a quick check on sizes and angles. I was just looking for graph paper and found this app which is much better.

One suggestion: could you reduce the precision to 0.1mm and .01 inches? The extra digits make it harder to read and if I need more accuracy, I'd need to use calipers anyway. Thanks.

Hartig2626 ,


I love this app!!

Developer Response ,

Thank you very much for your feedback and support!

App Privacy

The developer, VisTech.Projects LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    Up to six family members can use this app with Family Sharing enabled.

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