Camera-based measurements with real-world object alignment
Premium Polygon Measurement with color customization and helpers
Supports multiple angle units (percent, radian)
Screenshots available across all modes
Not ranked in any top lists currently
Lacks traditional level or ruler tools (level, ruler, meter) that some competitors offer
About Protractor
Protractor is a tools app developed by EXA Tools.
Download Statistics
Protractor has been downloaded 1.6 million times. In the last 30 days, the app was downloaded 21 thousand times.
User Ratings
Protractor is rated 4.18 out of 5 stars. The rating is based on 5.6 thousand ratings.
App Information
Protractor is FREE to download. The APK download size is 6.92 MB. The latest version available is 1.7.00. The last update was on January 14, 2026.
Technical Requirements
Protractor requires Android 5.0+ or higher. The app has a content rating of Everyone. The app has been available on Google Play February 2016.
Description
Protractor - smart instrument to measure angles. Turn on the camera mode and measure the angle of buildings, mountains, or any other object around you.
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So far so good. I like the clear markings. The adds only show after I used the app which is not a problem. I would like to see an indication of which side is higher when I work with small inclinations.
★★★★★j sykes· Nov 10, 2023
Brilliant design. Also comes with a visual plumb bob. I love the way the camera can be used to view a room or object. The protractor outline overlays the camera image and can be used to measure angles, hang pictures, and predict location of wall studs.
★★★★★Su· Feb 5, 2021
Really neat. The lock and photo features are handy. Plumb tool is also cool, although it briefly confused me until I found the toggle back to basic angle measurement. Adverts are subtle enough not to interfere. Thank you.
★☆☆☆☆Seth K· Jan 29, 2023
This app makes no sense. In one mode you can only measure an angle against a horizontal line. Another option lets you use the camera and adjust 2 angle lines independently. "This means you snap a photo then accurately measure it" is what a sane person would think. Nope. You have a live video feed and have to adjust 2 angles live while aligning the fulcrum live while trying to hold the camera steady, live. So it's about as accurate guessing the angle, but slower and more frustrating.
★☆☆☆☆Gereth Dittrick· Nov 30, 2021
Was expecting a protractor not a level. Very misleading
Google Play Rankings for Protractor
This app is not ranked
Technologies used by Protractor
Protractor is requesting 14 permissions and is using 14 libraries.
Permissions
Network communication
view network connections,
full network access,
Google Play billing service,
Google Play license check
Each subscription will automatically renew 3 days before the expiration date for
the same time period. Subscriptions can be cancelled at any time before the renewal.
AdMob
Android Jetpack core
Firebase