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 1.6.0

- Improved default configuration for new users
- Added feedback options to the Help menu
- Resolved issue with undo/redo that some users were seeing

Ratings and Reviews

4.4 out of 5
14 Ratings

14 Ratings

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.

App Privacy

The developer, Seb Seager, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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