Best National Electrical Code Apps

202+ iOS apps curated and reviewed

4.5 avg rating
18 free apps
Updated May 2026

With an average user rating of 4.5★, the national electrical code category is one of the App Store's strongest. Browse all 202+ apps we track, sorted so the most loved ones surface first.

Top Picks for National Electrical Code

NEC Mastery#1

NEC Mastery by Webrich Software Limited

8000+ Questions & Explanations
Editor's Choice
📚 Education
4.8(146 ratings)
FreeIn-App Purchases
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Prepare for your upcoming NEC Exam with over 8000 practice questions, detailed explanations, and references to the NEC sections. Track your progress, customize tests, and access mock exams. Download now to master the latest NEC 2023 Code updates and ace your certification exam.

Master Electrician Ref. Lite#2

Master Electrician Ref. Lite by PawEng, LLC

A handbook for electricians
Strong Contender
📊 Productivity
4.7(2.4K ratings)
Free
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A comprehensive electronic pocket electrician reference guide for electrical professionals and enthusiasts, providing essential information, calculations, NEC tables, and safety manuals. Visit MasterSparky.com for more details and upgrade to the full version for extensive content covering NEC codes over various years.

More National Electrical Code apps to explore

4
Ugly's Electrical References
Ugly's Electrical References
Ugly's Electrical References
by Informed Publishing
$12.99

This app is a comprehensive electrical reference guide that has been updated to align with the 2020 National Electrical Code. It offers a range of features such as calculators, interactive tools, and in-depth information for electricians, making it a valuable on-the-job resource.

📊 Productivity
(1.4K)
5
Electrical Code-A-Day
Electrical Code-A-Day
Electrical Code-A-Day
Quiz for Electricians
Free

Put your electrical knowledge to the test with this daily quiz app for electricians! Answer a new question each day or binge-answer them all at once. Perfect for apprentices, journeymen, and masters looking to sharpen their skills or refresh their knowledge. Lightning-fast learning on all things electrical!

📊 Productivity
(8.6K)
6
Code Buddy
Code Buddy
Code Buddy
#1 AI Tool for Skilled Trades
Free

"Code Buddy" is an AI-powered tool designed by and for electrical professionals, offering expert guidance and insights. Stay ahead in the electrical field with Code Buddy's specialized knowledge and support.

🔧 Utilities
(6)
7
Electrician Handbook — Basics
Electrician Handbook — Basics
Electrician Handbook — Basics
Electric circuit, voltage, ohm
Free
$5.99 | 100% OFF

An essential Electrician's Handbook for learning electrical theory, circuits, and calculations, suitable for beginners, amateurs, and professionals in the field. Featuring theory explanations, interactive circuit diagrams, calculators, and practical installation guides. Improve your electrical knowledge and skills with this comprehensive manual.

🔍 Reference
(925)
8
Ask BONBON - NEC Code AI
Ask BONBON - NEC Code AI
Ask BONBON - NEC Code AI
Electrical & NEC AI Assistant
Free
$14.99 | 100% OFF

Get instant answers to electrical questions and NEC code guidance with our AI-powered assistant, free for life. Sign up now and start improving your electrical work with fast, accurate answers and improved safety and compliance.

📊 Productivity
(34)
9
Wire Color Code
Wire Color Code
Wire Color Code
Electrical circuit colors
Free

Discover a must-have electrical circuit color app designed for both professionals and DIY enthusiasts. Access accurate wire color codes specific to your country, explore a vast circuit database, utilize quick search functionality, and customize colors for your projects. Stay compliant, efficient, and organized with this user-friendly tool. Download now for a convenient solution to all your circuit identification needs.

📊 Productivity
(654)
10
Southwire® Conduit Fill Calc
Southwire® Conduit Fill Calc
Southwire® Conduit Fill Calc
by Southwire Company
Free

This application helps electricians, engineers, and contractors quickly determine the proper conduit size to use based on NEC guidelines, including fill percentages and jam probability. Simply input conduit type, size, and conductors, and the app will calculate the conduit fill percentage for you.

🔧 Utilities
(679)
11
Journeyman Electrician (2025)
Journeyman Electrician (2025)
Journeyman Electrician (2025)
Master NEC Exam Practice Test
Free

Prepare for your journeyman electrician certification exam with this app! Practice tests, mock exams, test history tracking, bookmarking questions, and easy access to NEC concepts make it an essential tool for aspiring electricians in the USA, Australia, and Canada.

📚 Education
(278)
12
NEC Electrical Exam by Dakota
NEC Electrical Exam by Dakota
NEC Electrical Exam by Dakota
NEC Practice Test Questions
Free

Prepare for your NEC Electrical Exam with over 2,000 practice questions and 100 diagrams tailored to Journeyman, Master Electrician, or Electrical Contractor levels. Join thousands of successful electricians by downloading the app today.

📚 Education
(369)
13
Ohm's Law
Ohm's Law
Ohm's Law
by Creature Code Mobile, LLC
Free

Calculate electrical values easily with this Ohm's Law Calculator. Input two known values to quickly determine voltage, current, resistance, or power in any electrical circuit. Start calculating now!

🔧 Utilities
(165)
14
Electrical Calculations
Electrical Calculations
Electrical Calculations
by Egal Net di Ettore Gallina
Free
📊 Productivity
(125)
15
ElectriCalc Pro
ElectriCalc Pro
ElectriCalc Pro
Electrician NEC Calculator
Free
$29.99 | 100% OFF

This electrical code calculator app helps electrical contractors, designers, and specialists solve complex calculations in seconds, ensuring conformance with the latest National Electrical Code (NEC). Try it for free before buying, and discover a comprehensive electrical reference tool that saves time, trouble, and money.

🔧 Utilities
(256)
16
Electrician's Sidekick
Electrician's Sidekick
Electrician's Sidekick
by IDEAL INDUSTRIES, INC
Free

This free tool combines multiple electrical calculators into one convenient app, allowing electricians to efficiently and accurately complete tasks such as conduit bending, wire sizing, and voltage drop calculations. With its various calculators and features, it helps electricians maximize their fieldwork efficiency and accuracy, and is available for use even without internet connectivity.

📊 Productivity
(16)
17
Southwire® Voltage Drop Calc
Southwire® Voltage Drop Calc
Southwire® Voltage Drop Calc
Southwire Calculator
Free

Calculate the right wire size for your electrical circuit with this voltage drop calculator. Ensure proper conductivity while meeting specific voltage drop limits and NEC ampacity standards. Perfect for AWG and KCMIL sizes in various applications.

🔧 Utilities
(1.4K)
18
A NEC® 2017 Quick Reference
A NEC® 2017 Quick Reference
A NEC® 2017 Quick Reference
by Alan Cave
$1.99

This mobile app provides quick access to commonly used information from the National Electrical Code, making it a valuable resource for electrical engineers and electricians. Download the app to easily reference essential code information on-site or in the office.

🔍 Reference
(24)
19
Captain Code NEC Code Changes
Captain Code NEC Code Changes
Captain Code NEC Code Changes
Guide from 2023 - 2014
Free

This application helps electrical professionals stay current with National Electrical Code compliance by providing a searchable guide of code changes from 2023 to 2014. It offers a comprehensive tool with expert analysis, actual NEC text, and manufacturer insights to simplify code understanding and ensure compliance.

🔍 Reference
(5)
20
Ohms Law Calc.
Ohms Law Calc.
Ohms Law Calc.
Wire Size & Voltage Drop
Free

Ohms Law Calc. is a comprehensive app featuring 62 electrical calculators and formulas for various calculations such as voltage, current, resistance, and power. Explore a wide range of tools including voltage drop, power factor, transformer calculator, and more!

🔧 Utilities
(1.3K)