Best Digital Protractor Apps

250+ iOS apps curated and reviewed

4.2 avg rating

20 free apps

Updated July 2026

If you already know Protractor for Angle Measuring, this is the deeper bench. 250+ digital protractor apps for iPhone, all reviewed and ranked by user rating, recency, and download trend as of July 2026.

Compare top Digital Protractor Apps (July 2026)

#	App	Price	Rating	Ads	In-App Purchases	Updated
1	Protractor for Angle Measuring	Free	4.5★ (1K)	Yes	Yes	Aug 2026
2	Bubble Level: AR, Angle Finder	Free	4.5★ (682)	Yes	Yes	Aug 2026
3	Protractor+	Free	4.1★ (10K)	No	Yes	Aug 2026
4	Protractor - Angle Measure	Free	3.8★ (10)	Yes	No	Jul 2026
5	Protractor (Angle measurement)	Free	3.0★ (2)	Yes	No	Jul 2026
6	Digital Production Freiburg	Free	—	No	No	May 2026
7	Digital Control Plan	Free	—	No	No	May 2026
8	Protractor Angle Measure Tool	Free	4.6★ (149)	No	Yes	Aug 2026

Top Picks for Digital Protractor

#1

Protractor for Angle Measuring by AppLiks Sp. z O.O.

Measure Angles in Few Taps

Editor's Choice

🔧 Utilities

4.5😐(1K ratings)

FreeAdsIn-App Purchases

Protractor for Angle Measuring screenshot 1

Protractor for Angle Measuring screenshot 2

Protractor for Angle Measuring screenshot 3

Protractor for Angle Measuring screenshot 4

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.

What We Love

👍 Useful for surveying and measuring angles
💡 Interesting use of camera to overlay protractor
👍 Helps with specific use cases like golf setup
👍 Provides a clutter-free protractor experience

Room to Improve

🐛 Difficulty using the protractor tool and angle measurement
🐛 Inability to zoom in/out when measuring angles in photos
🐛 Inaccurate angle measurements in some cases

#2

Bubble Level: AR, Angle Finder by Jens Rieckhof

Spirit Level & Clinometer Tool

Strong Contender

🔧 Utilities

4.5😞(682 ratings)

FreeAdsIn-App Purchases

Bubble Level: AR, Angle Finder screenshot 1

Bubble Level: AR, Angle Finder screenshot 2

Bubble Level: AR, Angle Finder screenshot 3

Bubble Level: AR, Angle Finder screenshot 4

Bubble Level: AR, Angle Finder screenshot 5

Bubble Level: AR, Angle Finder screenshot 6

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.

What We Love

👍 Simple and easy to use
🔍 Accurate angle measurements
🛠️ Helpful for various tasks (telescopes, leveling, etc.)

Room to Improve

🤑 Expensive ad removal
🤖 Unreliable calibration
💤 Constant interruptions and ads

#3

Protractor+ by Tue Nguyen Minh

+ Angle Meter & Clinometer

Worth Considering

🔧 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

More Digital Protractor apps to explore

Protractor - Angle Measure

Protractor - Angle Measure

Digital Protractor & Camera

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.

Angle measurement with adjustable linesCamera integration for real-world measurementsFreeze function for static measurements

Protractor (Angle measurement)

Protractor (Angle measurement)

by Seong Eon Kim

Measure angles of objects using your device's camera. This utility app acts as a digital protractor, allowing you to accurately determine angles in real-world scenarios. Perfect for when a physical protractor is unavailable.

Camera-based angle measurementDigital protractor functionalityMeasure angles of objects

Digital Production Freiburg

Digital Production Freiburg

Manage Production Data

Digital Control Plan

Digital Control Plan

Build control plan

Protractor Angle Measure Tool

Protractor Angle Measure Tool

Spirit Level, Meter & Finder

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

AGSentry Digital Tools

AGSentry Digital Tools

by HD Precision Analytics, LLC

by PROFESSIONAL DIGISIGN E-SERVICES PRIVATE LIMITED

📊 Productivity

Angle Protractor Finder Tool

Angle Protractor Finder Tool

Smart clinometer & calculator

$0.99 | 100% OFF

fabriq: Digital shop floor

fabriq: Digital shop floor

Boost your team efficiency

📊 Productivity

Bubble Level for iPhone

Bubble Level for iPhone

+ Metal Detector & AR Ruler

This app offers a suite of measurement and detection tools, including a bubble level for alignment, angle measurement, surface flatness checks, and metal detection. It also features an AR ruler for distance measurement and an inclinometer for off-road navigation.

Bubble level for object alignmentAngle measurementSurface flatness check

free with in-app purchases

Mr Digital Client Dashboard

Mr Digital Client Dashboard

by Nicolas Gonzalez Urrea

📊 Productivity

by Ihsan Dincer

🛠️ Developer Tools

Engineers Digital Hub CPD

Engineers Digital Hub CPD

Construction CPD companion

Digital Office Platform

Digital Office Platform

🛍️ Shopping

OneKit – Smart Digital Toolbox

OneKit – Smart Digital Toolbox

All-in-One tools for measuring

FAQ about Digital Protractor

What are the best digital protractor apps for iPhone?

Protractor for Angle Measuring tops our digital protractor apps ranking as of July 2026, with a 4.5-star average from 1K App Store ratings, and it's free to download.

Are there free digital protractor apps for iPhone?

Yes — 20 of the top digital protractor apps we rank are free to download, including Protractor for Angle Measuring and Bubble Level: AR, Angle Finder.

Does Protractor for Angle Measuring have ads or in-app purchases?

Protractor for Angle Measuring shows ads and offers in-app purchases, according to its App Store listing as of July 2026.

How many digital protractor apps are on the App Store?

We track 250+ digital protractor apps on the iOS App Store as of July 2026, ranked by rating, recency, and analysis of real user reviews.

What does the Protractor for Angle Measuring app do?

This app turns your iPhone into a precision angle measuring tool. It allows you to measure angles in real-time using both touch gestures on the screen and your device's camera. You can also measure angles within photos you've taken.

What are the key features of this angle measuring app?

Key features include a 'Touch Measure' mode where you tap the screen to set angles, a 'Plumb Bob Pendulum' for tilt determination, the ability to measure angles in photos and from the live camera feed, simultaneous measurement of unlimited angles, and tool color customization for better visual organization.