Millimeter - screen ruler app

In-app purchases
4.1
1.61K reviews
500K+
Downloads
Content rating
Everyone
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About this app

Millimeter is a simple free screen ruler app. You can measure small objects that fit the device screen with this ruler. There are NO ADs in the app for the best experience and real full-screen measurements.

☛ ANY DEVICE can be calibrated for accurate measurements in Calibration Mode, where common standard objects (coins, credit cards, etc) can be used as a reference.

You can also customize your app by purchasing extra features or modes.

📏 What you can do in the free version of the on-screen ruler:

- Calibrate Millimeter with custom or standard objects
- Ruler Mode for the measure in metric and imperial units: mm and inch
- Additional vertical ruler for 2D measurements (📐)
- Area measurement for 2D measurements (⬛)
- Calculate W/H ratio of the rectangular objects in 2D
- Lock / Unlock rulers in any mode for better usability (🔒)
- Fine grid (1mm for millimeter units) 👍
- Use fractions for inch units
- Read interactive Help / Guide about all available features in a mode
- Use the app as a standard ruler
- Use full-screen mode for better user experience in Ruler mode

💳 You can customize your free version and purchase extra modules and features that add the following functionality:

- Spirit / bubble level for checking incline or tilt angle 🔮
- Parts Mode to split length or objects in equal parts
- Thread per inch ( TPI ) measurement pattern (🔩) in Parts mode (https://youtu.be/M1Qrbs2bgCY)
- Circle Mode to measure circular objects (🔴)
- Split circle into equal sector / angle
- Protractor / Goniometer Mode - measure angles (⚪)
- Set exact size, length, diameter, number of parts manually with keyboard input (⌨)
- Change background to BW night mode for power saving (🔋) and better visualization (🌓)

Use this screen ruler in different areas to measure small objects that fit your phone or tablet screen: jewelry, jewels, rings 💍 , stones, screws, bolts, buttons diameter, nuts, knitting needles, knitting pattern, washers, insects, mosaic tile, hooks, thread, frame wrap angle, etc.

Units: millimeter (mm), inch (in). Fractions are supported for inch units.

Supported languages:
- English, German, Russian, Japanese, and French languages.

📖 More about the app: http://goo.gl/304nJB

☎ If you have any problems with the app on your device, please contact support@vistechprojects.com first and we will help you. Thank you.

VisTech.Projects Team.
Updated on
Jan 19, 2019

Data safety

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No information available
4.1
1.61K reviews
A Google user
April 2, 2019
Very easy to use, pleasing UI. Very accurate. I recommend to use the largest size object to calibrate it, not coins or CC, or any object that has ' depth' . For example a sticky note 3 x 3 or 4 x 4 inches (these are very accurately cut by the manufacturer) , it sticks to the glass, so it does not move, when you calibrate it, it has virtually no depth so you can precisely align the edges with the grid lien. After a follow up measurement, the 3" was measured at 3 1/64". Like the light blue color of the background. Excellent
82 people found this review helpful
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vistech.projects
April 2, 2019
Thank you very much for taking time to share your experience with the app and for your calibration hints - you clearly understand the idea and it's the best way to get accurate measurements! We really appreciate your support here. VisTech.Projects Team.
A Google user
May 5, 2019
UPDATED REVIEW: When I 1st installed this app, I tried calibrating w/a CC. I couldn't get it 2 work, since I was unable 2 use my keyboard. Maybe it was operator error, OR maybe there ought 2 B better instructions 4 calibrating this way. After getting my screen size 4 my Galaxy S9, (FYI it's 146.5mm, 14.65cm or 5.8 in, 4 those who need it) I chose the 3rd option 4 calibrating w/my screen size. WOO-HOO! It worked! So apparently it was operator error. I revoke my 1 star & give u 5 star's! Thanks!
30 people found this review helpful
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vistech.projects
May 6, 2019
Maria, Thank you very much for taking time to update your review with details and for supporting the app! 👍 VisTech.Projects Team.
Richard Bowerbank
June 13, 2020
What a super little app for positioning tables, diagrams, pictures, etc in documents, pdfs. Best using it as a pop-up app overlaying say an Adobe document, as it can be faded (made see through), and it is easy to go back and forth. Just brilliant. And feedback!
55 people found this review helpful
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vistech.projects
June 13, 2020
Thank you very much for your feedback! Contact us at support@vistechprojects.com if you have feature ideas for the purpose you are using the app, we will be glad to hear from you and maybe implementing if it fits the app. Thank you for your support!

What's new

v2.3 New features:
- fixes and improvements
- new Level feature (paid) available in Pro version

v2.2 New features:
- Fine grid
- lock screen
- 2D ruler
- multi touch support (for easy measurements when object touches screen)
- fixes and improvements

v2.1 - new Protractor Mode( in-app purchase or in Pro version) for angle measurements: https://goo.gl/wquu2s