Smart Protractor

1.6.4

Smart Tools co.

4.14

17,203 reviews

5,000,000+
Downloads

Free

Measure the angle and slope of an object with your phone.

Alternative downloads for the Smart Protractor app

Smart Protractor compared with similar apps

Common keywords of similar apps

Smart Touch Units Pro Slope Protractor Angle Object Tools Mode Screen Camera Features Tilt Ruler

Keywords missing from this app

Level App Measure Tool Bubble Angles Meter Surface Measuring Clinometer Spirit Measurement Finder Accurate Digital Measurements Laser Device Precise Leveling Phone Free Calibration Inclinometer Plumb Pitch Compass Set Perfect Surfaces Display Precision Vertical Recent Slopes Target Easy Horizontal Objects

About Smart Protractor

Smart Protractor is a tools app developed by Smart Tools co..

Download Statistics

Smart Protractor has been downloaded 5.1 million times. In the last 30 days, the app was downloaded 6.3 thousand times.

User Ratings

Smart Protractor is rated 4.14 out of 5 stars. The rating is based on 17 thousand ratings.

App Information

Smart Protractor is FREE to download. The APK download size is 6.00 MB. The latest version available is 1.6.4. The last update was on May 31, 2026.

Technical Requirements

Smart Protractor requires Android 4.4+ or higher. The app has a content rating of Everyone. The app has been available on Google Play September 2010.

Description

Smart Protractor is in the 1st set of the Smart Tools collection.

More data about Smart Protractor

Price	Free to download
Total downloads	5.1 million
Recent downloads	6.3 thousand
Rating	4.14 based on 17 thousand ratings
Ranking	Not ranked
Version	1.6.4
APK size	6.00 MB
Number of libraries	25
Designed for Android	4.4+
Suitable for	Everyone
Ads	Contains ads

App Performance Report

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Google Play Rating history and histogram

12K

1.4K

340

2.6K

Downloads over time

Smart Protractor has been downloaded 5.1 million times. Over the past 30 days, it averaged 210 downloads per day.

Changelog of Smart Protractor

Show changelog

Developer information for Smart Tools co.

Smart Tools co.

androidboy1@gmail.com

Website

N/A

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Comments on Smart Protractor for Android

★★★★★ Joe PSB · Mar 21, 2024

Simple app. Allows you to find angles from plumb and has an interactive protractor.

★★★★★ Carl B · Oct 20, 2022

This is a really handy app to find the angle/slope if something. Also, handy for leveling a trailer. Thanks

★★★★★ kartracer088 · Nov 10, 2021

Simple and accurate, have been using it for several years.

★★★★★ Stewart Angus · Jul 5, 2025

Tried a few other apps, but this one is real easy to use the rest are overcomplicated nonsense when all you need is an easy to understand and use app and this is perfect for the job.

★★★★★ James Marlowe · May 1, 2023

Needed for solar tracker Angle for lenier actuator, 👍

★☆☆☆☆ Bill Smith · Oct 6, 2025

Absolute garbage. Whenever I wanted to use the app an add took over, and I couldn't even x it out. I couldn't even use the back button to get out of it I had to actually close and reactivate the app, and it started all over again Don't even waste your time.

★☆☆☆☆ Logan Harmon · Apr 25, 2024

I swear this app moves the image without your input when using the camera mode. Very frustrating

★★☆☆☆ Alexander Kreczkevich · Nov 8, 2021

Useless if your doing anything facing downward, like flooring, drawing or anything you might have to do on a desk.

★☆☆☆☆ Derek Sinclair · Mar 26, 2024

Uninstalled after first attempt to use the camera function, needs to many permissions and hundreds of cookies enabled to work, I gave up after turning off access to 120 tracking cookies and wasn't even a third of the way there.

Google Play Rankings for Smart Protractor

This app is not ranked

Technologies used by Smart Protractor

Smart Protractor is requesting 12 permissions and is using 26 libraries.
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