Aequo: On-Screen Measurements 4+

Freeform lengths and angles

Seb Seager

    • 4.6 • 20 Ratings
    • $1.99



Aequo is designed to help you to take length and angle measurements of objects on your screen.

> Find the distance between two points on your screen
> Find slopes of lines and angles between non-intersecting line segments
> Find an angle between three points on your screen
> Overlay your screen with an inch or centimeter grid
> Overlay your screen with a movable, zoomable protractor
> Show past measurements on-screen or view measurement history
> Apply a conversion factor to length measurements to scale on-screen units to "real-world" units
> Annotate your measurements with the pen tool
> Change the background style to provide greater contrast if needed
> Access all tools and settings quickly from the menu bar or using shortcuts.

I always appreciate any reviews or suggestions! Please feel free to leave a review on the App Store or contact me at

What’s New

Version 1.9.1

- Bug fixes and performance improvements.

Ratings and Reviews

4.6 out of 5
20 Ratings

20 Ratings

RsvlGlen ,


Does very simply what others can't usually, draw from any pixel to any other pixel and give the distance no matter the angle. In addition it keeps the results for you.

I asked if he could add a way to vary the shaded screen you had to work through and he immediately added that option so it works much better now with better visabilty of the object being measured.

为了ssr好评 ,

Simple, good, but still have room to improve

It's in general very easy to use. If the developer can add a zoom in feature for where the cursor stays, it will be great!

Markensman ,

Screen Measurements

Would like to give a better review but I am not able to rotate the transparent protractor. I am hoping with the update they allow for rotation of the protractor and other tools they provide. Please allow in the future update for 360 degree rotation of protractor.

Developer Response ,

Thanks for your suggestion, Markensman! This feature has now been added as of version 1.7.0. Please feel free to email with any other questions.

App Privacy

The developer, Seb Seager, 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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