Electrician License Exam Prep
Journeyman & Master · NEC 2026
Only for iPhone
Free · In‑App Purchases
iPhone
Now in Spanish too: all 763 questions, the exam guide and every worked calculation. Built on the 2026 NEC, in force in Texas and six more states.
Built on the 2026 National Electrical Code. Free to try: 45 questions, a scored diagnostic and four worked calculations. Then a 30-day pass for $14.99, a 90-day pass for $29.99, or everything for life for $49.99. Nothing renews on its own.
The 2026 NEC is now the code in force in Texas, Colorado, Maine, Massachusetts, Minnesota, North Dakota and Wyoming. Article numbers changed and the load calculations moved. If your study material still says 2023, it is teaching you answers from the old book.
763 PRACTICE QUESTIONS ACROSS 15 SUBJECT AREAS
Every question comes with an explanation and the exact 2026 NEC section it comes from, so you learn where the answer lives, not just what it is.
11 TIMED EXAMS BUILT ON THE TEXAS OUTLINE
Journeyman NEC Knowledge, Journeyman Calculations, Master NEC Knowledge, Master Calculations, Residential Wireman, Maintenance Electrician, Journeyman Industrial, Master Sign, Journeyman Sign, Residential Appliance Installer and Journeyman Lineman. Each one draws exactly the number of questions per subject area that the official Texas (TDLR) outline specifies, with the real time limit and the real passing score. Outside Texas, the question bank and the calculations fit any exam on the 2026 NEC.
24 WORKED CALCULATIONS, STEP BY STEP
Journeyman and Master each have their own calculations exam. Dwelling service by the standard and the optional method, feeders for multiple dwelling units, ranges, dryers, motors, transformers, conduit fill, voltage drop and the service neutral. Every step shows the formula before the numbers go in, the arithmetic, the NEC section and which table to open in your own book, and ends with the trap that catches people on exam day.
BUILT FOR AN OPEN-BOOK EXAM
You walk in with your own code book. This app teaches you to navigate it and to calculate with it, which is what the exam measures.
EN ESPAÑOL TAMBIÉN
The whole app works in Spanish: the 763 questions, the explanations, the 24 calculations and the exam guide. Article and table numbers stay exactly as they appear in your English code book.
ALSO INSIDE
• A free diagnostic: 10 questions spread like the real exam, scored area by area
• How the exam works: ten sections on what the official bulletin says, free always
• Study by topic, with your score per subject area
• Review my mistakes, every question you missed in one place
• Report any question you think is wrong, in one tap
• Works offline. No account. No ads. Ever.
HOW PAYING WORKS
Every option unlocks the same thing: the whole bank, all 11 timed exams and all 24 calculations. Passes end on their own after 30 or 90 days and are never charged again; buy another before one ends and the days add up. Texas Pro for life is a single purchase for good: Journeyman now, Master later.
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Unofficial study aid. Not affiliated with, endorsed by, or connected to the Texas Department of Licensing and Regulation, the NFPA, or PSI. NFPA 70 and National Electrical Code are registered trademarks of the National Fire Protection Association. All questions and explanations in this app are original work; no exam content and no code text are reproduced.
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The whole question bank, the explanations and the 24 worked calculations now come in Spanish too. New 30-day and 90-day passes that never renew, next to Texas Pro for life. A free 10-question diagnostic on Home that scores you by subject area. And a button to report any question in one tap.
The developer, RAFAEL ALBERTO VASQUEZ DIAZ, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- RAFAEL ALBERTO VASQUEZ DIAZ
- Size
- 20 MB
- Category
- Education
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- 90-day pass $29.99
- 30-day pass $14.99
- Texas Pro — Full Prep & Calcs $49.99
- Copyright
- © 2026 Rafael Vásquez