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Protractor Smart

Protractor Smart

Measure Every Angle

180 ratings
38 reviews
🔧 Utilities
📊 Productivity
Free
In-App Purchases

Details

  • Released
  • Updated
  • February 14, 2016
  • July 25, 2025

Developer

ExaMobile S.A.
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iphone
ipad
🧾$1.99
In-App Purchase↘︎
⭐38
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🔄6+ apps
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❓5 answered
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📦w/o updates
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About

This app acts as a smart instrument for measuring angles using your device's camera. It offers two free modes for measuring angles on screen or using a plumb bob for slopes, with an additional premium mode for polygon measurements.

✓Camera-based angle measurement
✓Touch measure mode
✓Plumb bob measure for slopes
✓Polygon measurement (premium)
✓Screenshot functionality
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What's New in Protractor Smart

1.6

July 25, 2025

Bug fixes and stability improvements New Premium features: - No ads - Polygon Measurement - Angle measurements on image - Angle measurements on camera preview - Color customization - Additional angle units (percent, radian) - Customizable plumb bob shapes - Laser and auxiliary lines in camera mode

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1

In-App Purchases

$1.99

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User reviews

Most RecentHighest RatedLowest Rated

I need help!!

I have a project due this week and I keep trying to use this app, but it’s quite literally stuck at the loading screen. I’ve un-downloaded the app 6 times and it continues to say loading for about 30 mins. Is this just how the app is or is mine messed up? If so how do I fix this issue? Thank you!!!
xXbunnynikeXxxXbunnynikeXx

So many ads

So many ads and impossible to work with, this is a waste of time of an app don’t download it
hi hi okkkkkhi hi okkkkk

잘 안되자나요

ㅜ
삼미나미나에에와카와카에에에삼미나미나에에와카와카에에에

Response from developer

만약 사용 중 문제가 발생하면 help@examobile.pl로 문의해 주세요. 최대한 빠른 시일 내에 문제를 해결하거나 수정해 드리겠습니다. 감사합니다. Exa 지원팀 드림

정민정바보

민정덩바보진겸미바봉기맼나방보
가묨미가묨미

Response from developer

만약 사용 중 문제가 발생하면 help@examobile.pl로 문의해 주세요. 최대한 빠른 시일 내에 문제를 해결하거나 수정해 드리겠습니다. 감사합니다. Exa 지원팀 드림

Thanks

Thanks for not nickle and diming
jhkilroyjhkilroy
See 33 more reviews

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FAQ

What does the Protractor Smart app do?

Protractor Smart is a digital instrument that allows you to measure angles using your smartphone's camera. It offers various modes to measure angles of real-world objects, slopes, and even complex shapes.

What are the key features of Protractor Smart?

The app includes a 'Touch measure' mode where you tap the screen to define angles, and a 'Plumb bob measure' for determining slopes using a pendulum. A premium mode allows for polygon measurements by drawing shapes on screen or images.

Is Protractor Smart free to use?

The app offers two measuring modes, 'Touch measure' and 'Plumb bob measure,' for free. Additional features, such as 'Polygon measurement,' are available through in-app purchases, indicating a freemium model.

Can I measure angles of real-world objects with this app?

Yes, you can switch to camera view in both 'Touch measure' and 'Plumb bob measure' modes to measure the angles of buildings, mountains, or any other object around you. The premium polygon mode also allows you to trace shapes from real objects via the camera.

What is the premium mode in Protractor Smart?

The premium mode, 'Polygon measurement,' enables you to draw any shape on your screen to check all its angles. You can do this by tracing real objects through the camera or by drawing on photos from your gallery or new pictures.