Smart Protractor

1.6.4

Smart Tools co.

4.08

17,212 reviews

5,000,000+
Downloads

Free

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

4.08 · 17,212 reviews · 5,000,000+ downloads

Download from Google Play

About Smart Protractor

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

Download Statistics

Smart Protractor has been downloaded 5.2 million times. In the last 30 days, the app was downloaded 6.9 thousand times.

User Ratings

Smart Protractor is rated 4.08 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 since 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	5.2 million
Recent downloads	6.9 thousand
Rating	4.08 based on 17 thousand ratings
Ranking	Not ranked
Version	1.6.4
APK size	6.00 MB
Number of libraries	32
Designed for Android	4.4+
Suitable for	Everyone
Ads	Contains ads

App Performance Report

Get a detailed PDF report for Smart Protractor with download trends, rating history, and key performance statistics — useful for competitive research or tracking your own app. Learn more

Get PDF Report — $29

Alternative downloads for the Smart Protractor app

Google Play Rating history and histogram

Rating history

Subscribe to see the full rating timeline

12K

1.4K

1.2K

340

2.8K

Downloads over time

Subscribe to see download velocity and history

Smart Protractor has been downloaded 5.2 million times. Over the past 30 days, it averaged 230 downloads per day.

Changelog of Smart Protractor

Show changelog

Developer information for Smart Tools co.

Smart Tools co.

androidboy1@gmail.com

Website

Legal name:

Address:

Phone number:

Are you the developer of this app? Join us for free to see more information about your app and learn how we can help you promote and earn money with your app.

I'm the developer of this app

Comments on Smart Protractor for Android

★★★★★ 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, 👍

★★★★★ Joe PSB · Mar 21, 2024

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

★☆☆☆☆ 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.

★☆☆☆☆ Logan Harmon · Apr 25, 2024

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

★☆☆☆☆ 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.

Google Play Rankings for Smart Protractor

This app is not ranked

Technologies used by Smart Protractor

12 permissions · 32 libraries

Subscribe to see full permission and library details

Frequently asked questions about Smart Protractor

Is Smart Protractor free?

Yes. Smart Protractor is free to download from Google Play.

Is Smart Protractor still available?

Yes. Smart Protractor is on Google Play, and the last update we saw was on May 31, 2026.

Does Smart Protractor contain ads?

Yes. Google Play lists Smart Protractor as containing ads.

What Android version does Smart Protractor require?

Smart Protractor runs on Android 4.4 and higher.

How large is the Smart Protractor APK?

The Smart Protractor APK is 6.00 MB.

Is Smart Protractor suitable for children?

Google Play rates the content of Smart Protractor as suitable for everyone.

How many times has Smart Protractor been downloaded?

Google Play lists 5,000,000+ downloads for Smart Protractor.

How do people rate Smart Protractor?

Smart Protractor scores 4.08 out of 5 stars, from 17,212 ratings on Google Play.

Who made Smart Protractor?

Smart Protractor was developed by Smart Tools co.. It is listed in the tools category on Google Play.

What are the best alternatives to Smart Protractor?

People looking at Smart Protractor also look at these tools apps: Protractor + Angle Finder - AR, Protractor, Max Protractor, Cool Bubble Level (Clinometer), Bubble Level, Ruler.

Apps on sale Today's trending apps Top new apps Popular Tools Apps Apps other people are watching

AppBrain is a directory focused on discovering great apps and games. We give statistics, rankings and search options that Google Play and the App Store don't have. All trademarks are owned by their respective owners. AppBrain doesn't offer APKs or binaries, and always lets users install the official version from Google Play or the App Store.

More apps