Best Wiring Diagram Electrical Apps

195+ iOS apps curated and reviewed

4.6 avg rating
16 free apps
Updated May 2026

Carmin is the household name in wiring diagram electrical, but it's far from the only option. We track 195+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.

Top Picks for Wiring Diagram Electrical

Carmin#1

Carmin by Chuan Nguyen Van

Automotive Wiring Diagrams
Editor's Choice
🔍 Reference
4.3😐(175 ratings)
FreeAdsIn-App Purchases
Carmin screenshot 1
Carmin screenshot 2
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Carmin screenshot 4
Carmin screenshot 5
Carmin screenshot 6

Access regularly updated trustworthy automotive wiring diagrams for car repair and study purposes. Explore a library of videos and technical documents for easy reference and research with just a few clicks. Terms of Service available at the provided link.

What We Love

  • 📚 Comprehensive vehicle diagram database
  • 💰 Free version available with good content
  • 🎯 Helpful for car diagnostics and repairs
  • ⚡ Quick access to wiring information

Room to Improve

  • 📺 Excessive advertisements in free version
  • 🐛 Frequent app crashes and instability on iOS
  • 🚫 Limited vehicle coverage (missing years and models)
Electric Toolkit - Calculator#3

Electric Toolkit - Calculator by Cyberprodigy LLC

Electrical Wiring Diagrams
Worth Considering
🔧 Utilities
4.8(272 ratings)
$5.99
Electric Toolkit - Calculator screenshot 1
Electric Toolkit - Calculator screenshot 2
Electric Toolkit - Calculator screenshot 3
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Electric Toolkit - Calculator screenshot 5
Electric Toolkit - Calculator screenshot 6

This application provides a comprehensive collection of electrical wiring diagrams and calculators for home wiring projects, including diagrams for switches, ceiling fans, and outlets, as well as calculators for circuit breakers, voltage drop, and more. Download the app to access these useful tools and make your electrical projects easier and more efficient.

More Wiring Diagram Electrical apps to explore

4
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)
5
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)
6
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)
7
Master Electrician Ref. Lite
Master Electrician Ref. Lite
Master Electrician Ref. Lite
A handbook for electricians
Free

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.

📊 Productivity
(2.4K)
8
Electrical Wiring Simulator
Electrical Wiring Simulator
Electrical Wiring Simulator
Practice Anytime, Anywhere
Free
$19.99 | 100% OFF

Practice electrical circuits with step-by-step simulations, mastering real-world wiring skills anytime, anywhere, without the risk. Learn and simulate basic house wiring, load control, and troubleshooting techniques, and take your skills to the next level with hands-on learning.

📚 Education
(7)
9
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)
10
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)
11
Electrical & Electrician App
Electrical & Electrician App
Electrical & Electrician App
Quizzes, Flashcards and Videos
Free
📚 Education
(5)
12
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)
13
Mike Holt's Electrical Toolbox
Mike Holt's Electrical Toolbox
Mike Holt's Electrical Toolbox
Electrical Power Calculator
Free

An industry-leading electrical power calculator app designed by Mike Holt for electricians, inspectors, contractors, and engineers. Perform conductor sizing, circuit protection, race sizing, and more with this practical and useful tool.

🔧 Utilities
(197)
14
2017 Master Electrician Ref.
2017 Master Electrician Ref.
2017 Master Electrician Ref.
A handbook for electricians
$9.99

An essential electronic pocket reference guide for electricians working in residential, industrial, and commercial settings, offering calculations, diagrams, code information, tools, safety guidelines, and more. Accessible on iPhones, iPod Touch, and iPads. Explore the complete functionality at MasterSparky.com.

📊 Productivity
(1.2K)
15
Electrical Calculations
Electrical Calculations
Electrical Calculations
by Egal Net di Ettore Gallina
Free
📊 Productivity
(125)
16
SLD | Electrical diagrams
SLD | Electrical diagrams
SLD | Electrical diagrams
Draw schemes easily
$1.99

Create professional electrical diagrams quickly and easily with integrated IEC and ANSI standard symbols. Drag and drop symbols like circuit breakers, switches, motors, and more to customize your one-line diagrams with precision and ease. Start designing now!

📊 Productivity
(130)
17
Wiring Harnesser
Wiring Harnesser
Wiring Harnesser
Wiring Reference & Documenter
Free

This mobile application helps technicians document and reference wiring harnesses and electrical systems, providing tools to input and navigate complex connections, upload diagrams and images, and perform calculations. With this app, technicians can easily access and manage wiring information on-site, streamlining their work and reducing reliance on expensive tools or cryptic diagrams.

📊 Productivity
(3)
18
Simubus
Simubus
Simubus
Electrical Wiring Simulator
Free
🔧 Utilities
(0)
19
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
(372)
20
Electrical Formulator
Electrical Formulator
Electrical Formulator
by Historycentral.com Inc
Free

This powerful electrical calculation tool offers hundreds of conversion and calculation tools to solve various electrical design and engineering challenges. It allows users to save, print, and share results, and access frequently used formulas, making it an essential utility for engineers, electricians, and energy professionals to work efficiently and accurately.

📊 Productivity
(1)