NEC Electrical Exam by VoltLab vs NEC Prep
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
NEC Electrical Exam by VoltLab
Prepare for electrician licensing exams with AI-powered practice tests and personalized study plans. Track your progress, identify weak areas, and simulate real exam conditions to ensure you're ready to pass.
- AI-powered readiness score
- Full mock exams
- Customizable practice drills
- Daily code challenges
- AI-generated questions with explanations
- Progress tracking and weak area identification
- Timed practice mode
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Pass your journeyman electrical exam with a plan, not guesswork. VoltageLab is NEC exam prep built for electricians. Pick your trade level, your state and your exam date, and the app builds a day-by-day study plan, weights your practice to the code sections your exam actually tests, and shows how close you are to ready. VERIFIED PRACTICE QUESTIONS Every question is written to the National Electrical Code and comes with a full explanation and the article it's based on, so you learn the code, not just the answer. TIMED MOCK EXAMS Sit full-length practice tests with a real clock, real question counts and a pass mark. Review every miss afterwards. READINESS SCORE See which parts of the code are costing you points and watch your score rise as you fix them. DRILLS FOR EVERY SKILL - Calc Drills: box fill, conduit fill, voltage drop, ampacity and load calculations - Table Match: find the right NEC table fast, against the clock - Code Compliant?: spot the violation in real-world installs - Code Reading: learn to navigate the codebook quickly - Custom practice by article or topic STUDY A LITTLE, EVERY DAY - One study unit a day on your personal learning path - Daily Code Challenge: a fresh question every day - Streaks and badges to keep you on track LEARN WITH YOUR CREW - 1v1 code battles against other electricians - Group quizzes for apprentices, classmates and shop crews - Weekly Code Cup leaderboard BUILT AROUND YOUR STATE EXAM Prepare for journeyman electrician, master electrician and electrical contractor licensing exams in 38 states, including Texas, Florida, Georgia, North Carolina, Ohio, Michigan, Washington and Colorado. Great for apprentices and trade school students too. Start free. Upgrade to Pro for full access to every question and drill. VoltageLab is an independent study tool and is not affiliated with NFPA, PSI, Pearson VUE, Prov or any state licensing board. National Electrical Code and NEC are registered trademarks of the NFPA. Terms of Use: https://quiz.voltagelab.com/play-store-terms-conditions Privacy Policy: https://quiz.voltagelab.com/play-store-privacy-policy
NEC Prep
This app guides users through electrical exam preparation with a structured study plan. It focuses on building code book lookup speed through lessons, practice rounds, and progress tracking, culminating in timed runs. The tool helps users learn efficient navigation and application of electrical code rules.
- Structured study path with visual course map
- Book-first learning for code book navigation
- Daily lookup questions and topic-focused practice
- Progress tracking for lessons, streaks, and corrections
- Local study settings saved on device
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Build NEC lookup speed with a study plan that always shows the next move. NEC Prep turns electrical exam preparation into a structured path. Start by setting up your code book, move through focused lessons and practice rounds, and track your work as you progress toward a final timed run. THE STUDY PATH - Follow a visual course map from book setup through exam practice - See the purpose, sections, and progress for every lesson - Unlock the next stop as you complete the current work - Keep lessons, practice, review, and settings connected in one system BOOK-FIRST LEARNING - Build code book tab and navigation habits - Learn the route to the relevant article instead of relying on guesses - Practice finding, reading, and applying code rules - Reinforce each active lesson with focused rounds DAILY PRACTICE - Complete a quick daily lookup question - Choose focused practice by topic - Review the NEC route after each answer - Keep your test date and current work visible PROGRESS WITHOUT CLUTTER - See completed lessons and the next unlocked step - Track current streak, answered questions, and corrections - Review routes that need more work - Keep study settings saved locally on your device NEC Prep is built for electricians, apprentices, and electrical exam candidates who want direct practice and a clearer way through the book. NEC Prep is an independent study tool. It is not affiliated with, endorsed by, or sponsored by the National Fire Protection Association. NEC and National Electrical Code are registered trademarks of the National Fire Protection Association.
Screenshots
Verdict
The clearest difference is in-app purchases: NEC Prep at none against NEC Electrical Exam by VoltLab's 2. NEC Prep also leads on ratings volume (4 vs 1). NEC Electrical Exam by VoltLab's advantage is ads (none vs shown) and iOS requirement (15.6 vs 17.0). On price, rating, review sentiment and update cadence there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. NEC Electrical Exam by VoltLab sells 2 in-app purchases, starting at $2.99 per month. NEC Prep asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for NEC Electrical Exam by VoltLab against 5.0 for NEC Prep. Both are backed by a comparable volume of ratings — 1 and 4 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
NEC Electrical Exam by VoltLab ships an update every 5 weeks, NEC Prep monthly. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.
| Parameter | NEC Electrical Exam by VoltLab | NEC Prep |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (4 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 1 | 4 — better |
| Update frequency | Every 5 weeks | Monthly — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.6 — better | 17.0 |
| Further details — not scored | ||
| Size | 77 MB | 125 MB |
| Age rating | 4+ | 4+ |
| Developer | Nazmul Islam | DYLAN MICHAEL MCBEAN |
Customer experience
NEC Electrical Exam by VoltLab
NEC Prep
In-app purchases
NEC Electrical Exam by VoltLab
- US3 Days trial$2.991 Month
- US3 Days trial$29.991 Year
NEC Prep
No in-app purchases
Questions
Is NEC Electrical Exam by VoltLab free?
Is NEC Prep free?
Which has better reviews, NEC Electrical Exam by VoltLab or NEC Prep?
Do NEC Electrical Exam by VoltLab or NEC Prep have ads?
Which is updated more often, NEC Electrical Exam by VoltLab or NEC Prep?
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