Best Degree Protractor Apps

245+ iOS apps curated and reviewed

4.2 avg rating

18 free apps

Updated August 2026

The best degree protractor apps on iPhone average 4.2★ across 245+ titles — we've ranked them by what real users actually keep on their phones. Updated August 2026.

Compare top Degree Protractor Apps (August 2026)

#	App	Price	Rating	Ads	In-App Purchases	Updated
1	Protractor+	Free	4.1★ (10K)	No	Yes	Sep 2026
2	Protractor - Angle Measure	Free	3.8★ (13)	Yes	No	Sep 2026
3	70 Degree : Smart Protractor	Free	2.9★ (10)	Yes	No	Jul 2026
4	Angle Gradient Inclinometer	Free	4.4★ (295)	Yes	No	Sep 2026
5	Protractor for Angle Measuring	Free	4.5★ (1K)	Yes	Yes	Sep 2026
6	Protractor Edge - Clinometer	Free	4.5★ (55)	Yes	Yes	Sep 2026
7	Protractor Angle Measure Tool	Free	4.5★ (158)	No	Yes	Sep 2026
8	Protractor: Angle Finder	Free	—	No	Yes	Sep 2026

Top Picks for Degree Protractor

#1

Protractor+ by Tue Nguyen Minh

+ Angle Meter & Clinometer

Editor's Choice

🔧 Utilities

4.1😞(10K ratings)

FreeIn-App Purchases

Protractor+ screenshot 1

Protractor+ screenshot 2

Transform your device into a versatile angle measurement tool. Easily measure angles in both degrees and radians with an intuitive interface. Ideal for quick and precise angle readings.

What We Love

🚀 Quick angle measurement
👍 Useful for physics labs
👍 Easy to use

Room to Improve

🔒 Degrees feature locked behind paywall
🐛 Unreliable camera feature
🔋 Frequent timeouts force upgrade
💰 Aggressive monetization tactics

#2

Protractor - Angle Measure by Jens Rieckhof

Digital Protractor & Camera

Strong Contender

🔧 Utilities

3.8(13 ratings)

FreeAds

Protractor - Angle Measure screenshot 1

Protractor - Angle Measure screenshot 2

Protractor - Angle Measure screenshot 3

Protractor - Angle Measure screenshot 4

Protractor - Angle Measure screenshot 5

Protractor - Angle Measure screenshot 6

Measure angles precisely using your phone's screen or camera. This intuitive tool allows you to adjust measurement lines and instantly see the angular difference. Ideal for professionals and hobbyists needing quick, accurate angle calculations.

#3

70 Degree : Smart Protractor by sekleung chang

Creative Angle Measurement

Worth Considering

🔧 Utilities

2.9(10 ratings)

FreeAds

70 Degree : Smart Protractor screenshot 1

70 Degree : Smart Protractor screenshot 2

70 Degree : Smart Protractor screenshot 3

This utility app helps you measure angles with your iPhone. It provides notifications when a target angle is reached, with options for visual and auditory alerts.

More Degree Protractor apps to explore

Angle Gradient Inclinometer

Angle Gradient Inclinometer

Angle Gradient Inclinometer

Angle 360 Degree, Gradient%

Easily measure tilt angles with this free protractor app. It displays inclination from 0 to 359 degrees, along with gradient percentages and angles summing to 180 or 360 degrees. Switch to theodolite mode to set a specified angle to zero.

Measure tilt angles 0-359 degreesDisplay gradient percentageShow sum angles (180/360)

📊 Productivity

Protractor for Angle Measuring

Protractor for Angle Measuring

Protractor for Angle Measuring

Measure Angles in Few Taps

Transform your iPhone into a precision angle measuring tool. Easily measure angles in real-time using touch or camera modes, and even analyze angles in existing photos. Customize your tools for a seamless experience.

Real-time angle measurementTouch and camera modesMeasure angles in photos

free with in-app purchases

Protractor Edge - Clinometer

Protractor Edge - Clinometer

Protractor Edge - Clinometer

Angle Finder, Angle Measure

Measure angles directly on your device without taking photos or placing the angle on screen. This app offers a unique and efficient way to determine degrees, saving you time with its handy assistant functionality.

Direct angle measurement on deviceIntuitive line dragging interfaceMeasures angles in photos (Premium)

Protractor Angle Measure Tool

Protractor Angle Measure Tool

Protractor Angle Measure Tool

Spirit Bubble Level & Slope

This tool transforms your device into a precise angle measurement instrument. It's ideal for DIY projects, construction, and renovations, offering real-time readings in various formats. Get professional-grade accuracy for all your angled surface needs.

Precise angle measurementVertical and horizontal orientationsMultiple measurement units (degrees, radians, gradians)

free with in-app purchases

Protractor: Angle Finder

Protractor: Angle Finder

Protractor: Angle Finder

Camera Level, Slope Meter

Measure angles in the real world using augmented reality. Simply point your device and touch the screen to measure anything you desire. Customize font size, units, and line colors for a personalized experience.

Augmented reality measurementMeasure with finger touchCustomizable font size

Canvas by Instructure

Canvas by Instructure

Canvas by Instructure

by Instructure Inc.

Access your courses and stay organized with this learning app. Track assignments, submit work, participate in discussions, and even study offline. It supports integrated tools and accessibility features for a seamless educational experience.

View grades and track assignmentsSubmit assignments and take quizzesJoin class discussions

Protractor Angle Meter

Protractor Angle Meter

Protractor Angle Meter

Measure angles from photos

This app allows you to measure angles from photos using your device's camera or existing images. Add multiple measurements with customizable colors and labels, and view results in various units. Save your work automatically and export high-quality images of your measurements.

Measure angles from photosLive camera or photo library inputMultiple angle measurements per photo

free with in-app purchases

Protractor (Virtual & Simple)

Protractor (Virtual & Simple)

Protractor (Virtual & Simple)

by Systemiko Inc.

College Transfer Credits

College Transfer Credits

College Transfer Credits

Finish Your Degree Online

Explore how your college credits can transfer to online degree programs. Receive a free preliminary evaluation by uploading your transcripts. Save time and money on your education.

Free preliminary credit evaluationUpload college transcriptsAssociate and bachelor's degree programs

Measure Angles - Bubble Level

Measure Angles - Bubble Level

Measure Angles - Bubble Level

Protractor, Clinometer, Slopes

This app transforms your device into a versatile measuring tool. It offers precise angle readings with a digital protractor and bubble level, along with AR-powered distance and volume measurements. Ideal for professionals, DIY enthusiasts, and everyday tasks requiring accuracy.

Digital protractor for angle measurementBubble level for surface flatnessAR-powered distance and volume estimation

free with in-app purchases

Level Tool · Angle Finder

Level Tool · Angle Finder

Level Tool · Angle Finder

The best level tool for you

This app provides a suite of digital measurement tools, including a spirit level, angle finder, laser level, and metal detector. It helps users accurately measure angles, check surface flatness, and align objects for various home, DIY, and professional projects. Features include sound and light alerts, calibration, and AR-based laser lines.

Digital spirit level with sound and light alertsAngle finder with degree precision and lockingAR-powered laser level for alignment

free with in-app purchases

AngleFinder: Protractor

AngleFinder: Protractor

AngleFinder: Protractor

Measure Photos & Camera

Pocket Laser Level 360

Pocket Laser Level 360

Pocket Laser Level 360

Protractor, Alignment Tool

Transform your device into a versatile measuring tool. Accurately check the horizontal and vertical alignment of objects using your camera and device sensors. Measure angles with precision for DIY projects or home improvements.

Laser level functionalityProtractor mode for angle measurementUses gyroscope and accelerometer

free with in-app purchases

Digital Angle Finder: 3D Meter

Digital Angle Finder: 3D Meter

Digital Angle Finder: 3D Meter

Protractor & 3D Angle Measure

Measure angles precisely using your device's sensors. It functions as both a protractor and a 3D angle meter, allowing you to determine angles between surfaces or lines on a plane with high accuracy. Save your measurements by taking photos with the angle recorded.

Precise angle measurement3D angle measurementProtractor mode

Bubble Level: AR, Angle Finder

Bubble Level: AR, Angle Finder

Bubble Level: AR, Angle Finder

Spirit Level & Clinometer Tool

This app transforms your phone into a precise leveling tool. It offers accurate angle measurement, inclination detection, and augmented reality features for DIY and professional use. Calibration is simple and quick.

Ultra-precise angle measurementInclination and slope meterAugmented reality ruler and protractor

free with in-app purchases

Bubble Level + Spirit Level

Bubble Level + Spirit Level

Bubble Level + Spirit Level

Measure Angles - Clinometer

Transform your smartphone into a precise measuring tool. This application offers two modes for accurately leveling surfaces or measuring angles, with calibration made simple. It's ideal for tasks like hanging pictures, checking table levels, or calculating roof pitches.

Bubble level and spirit level modesAccurate to one tenth of a degreeEasy calibration

free with in-app purchases

FAQ about Degree Protractor

What are the best degree protractor apps for iPhone?

Protractor+ tops our degree protractor apps ranking as of August 2026, with a 4.1-star average from 10K App Store ratings, and it's free to download.

Are there free degree protractor apps for iPhone?

Yes — 18 of the top degree protractor apps we rank are free to download, including Protractor+ and Protractor - Angle Measure.

Does Protractor+ have ads or in-app purchases?

Protractor+ has no ads and offers in-app purchases, according to its App Store listing as of August 2026.

How many degree protractor apps are on the App Store?

We track 245+ degree protractor apps on the iOS App Store as of August 2026, ranked by rating, recency, and analysis of real user reviews.

What does this app do?

This application turns your iPhone into a pocket protractor for measuring angles. It allows you to quickly and easily determine angles in both degrees and radians.

What are the key features?

Key features include the ability to measure angles in both degrees and radians, an intuitive visual control for easy use, and an elegant design for a pleasant user experience.