Quickly and accurately calculate the inductance of various coil types. This app provides practical results for electronics hobbyists, students, and engineers with a clean, easy-to-use interface and helpful diagrams.
3.7(7 ratings)
$2.99
Best apps like Protractor - measure any angle
49+ similar apps compared and reviewed
4.0 avg rating
4 free apps
Updated July 2026
Whether you want more options like Protractor or a completely different take on the same concept, our curated list of 49+ similar apps has you covered. Updated for 2026 with the latest ratings and comparisons.
Top Alternatives to Protractor
4.9(16 ratings)
$3.99
This tool helps HVAC professionals quickly determine appropriate duct sizes. It functions like traditional duct sizing wheels, allowing users to adjust scales for pressure drop or velocity to find optimal dimensions for round and rectangular ducts. Supports both imperial and metric units.
English Phonetic Keyboard with IPA symbols by Dawid Pietrala
Worth Considering
🔧 Utilities
2.0(1 ratings)
$1.99
This utility allows users to input phonetic transcriptions using the International Phonetic Alphabet directly within other applications. It is designed for linguists, actors, speakers, and English learners who need to record pronunciations. Transcriptions can be shared or saved to note-taking apps.
More apps like Protractor
4
DataSure Mobile
by The L.S. Starrett Company
Free
This free utility app allows immediate data collection on iOS devices. It supports multiple tools, data logging, sharing, and complex formulas, with the ability to save favorite tools for efficient use.
Immediate data collectingSupport for 5-8 toolsDRO Function
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free5
Vibroscope
Vibration Analyzer
$6.99
This tool uses your device's accelerometer to analyze vibrations in real-time, even those inaudible to humans. It visualizes acceleration data and offers FFT analysis for frequency components, with options to log measurements.
Real-time vibration measurementInaudible vibration detectionTwo-axial coordinate display
🔧 Utilities
(2)
paid6
![Converter Plus [paid]](https://cdn3.appshunter.io/i/Purple118/7efc162c1c85ecf95ff2aebfb037e140/AppIcon-1x_U007emarketing-85-220-5.png/640x0w.webp "Converter Plus [paid]")
Converter Plus [paid]
Unit and Currency Converter
$1.99
This app offers a comprehensive unit and currency converter with a vast array of categories and calculators for everyday financial and scientific needs. It allows users to customize templates, download shared ones, and automatically refreshes currency exchange rates.
Extensive unit and currency conversionMultiple calculators (mortgage, loan, tip)Customizable and downloadable templates
🔧 Utilities
(196)
paid7
Starrett PowerCalc
by The L.S. Starrett Company
Free
This tool helps users select the optimal saw for a specific cutting task. It aims to improve production efficiency and extend the lifespan of cutting tools.
Optimizes saw selection for cutsIncreases production speedExtends tool life
🔧 Utilities
(1)
free8
Angles - Video Goniometer
by Nathaniel Cochran
$0.99
This tool allows users to measure angles within videos, either captured live or imported from their library. It supports frame-by-frame analysis and exporting data for further calculations. Designed for rehabilitation professionals.
Measure angles in videosCapture or import videoFrame-by-frame video analysis
🔧 Utilities
(5)
paid9
AltiTrack - Altitude Meter
Track your Altitude!
Free
This app allows you to monitor your current altitude and view a 24-hour history directly on your Apple Watch. It offers various complication types to display key altitude data at a glance.
Track current altitudeView 24-hour altitude historyApple Watch complications
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(3)
free10
ErgoMine
by Centers for Disease Control and Prevention
Free
This app helps mining companies conduct ergonomics audits for various operations. It uses questionnaires to identify workplace deficiencies and provides recommendations and resources for improvement. Developed by researchers, it's designed for safety personnel without requiring ergonomics expertise.
Ergonomics audits for bagging, maintenance, and haul trucksFocus on injury preventionQuestionnaire-based evaluation
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free