Trade Exam Prep
That Actually Works
We build code-compliant professional tools — voltage drop calculators, DOT placard builders, load charts — that tradespeople use to pass their exam and keep on the job. Start free. Plans from $9.99.
No account needed · works on iPhone & Android · free to try
Pass Promise — don't pass? Get 4 months freeTry it now — no account, no download
Answer 5 real exam questions
Pick your exam below — real questions, each with an instant AI explanation. See how it feels before you commit a cent.
Electrician · Question 1 of 5
A metal underground water pipe used as a grounding electrode must be in direct contact with the earth for at least how many feet?
Pick an answer to see the explanation + an instant AI breakdown.
43
Exam prep apps
40,930+
Practice questions
4.8 ★
From 77 App Store ratings
$59.99
One-time, no sub
Journeyman & Master Electrician · NEC 2026
Electrician Exam Prep
1,000+ practice questions covering the 2026 NEC — load calculations, conduit fill, grounding, and motors. Built-in voltage-drop calculator. Updated for the new code cycle and covering all 50 states + DC.
Our Difference
Not just quizzes.
Professional utility tools.
Every VoltExam app ships with a proprietary, code-compliant tool that real professionals use on the job. Not to study. On actual job sites, on trucks, in the field.
The exam questions are there to get you licensed. The tools are there because you'll keep using them long after the exam is over.
Other apps
- ✕ Quiz banks only
- ✕ No on-job utility
- ✕ Subscription lock-in
- ✕ Generic content
VoltExam
- ✓ Built-in pro tools
- ✓ Daily job use
- ✓ One-time purchase
- ✓ Code-accurate content
Electrician
Voltage Drop Calculator
CDL Hazmat
DOT Placard Builder
Crane Op.
Load Chart Calculator
HVAC
Refrigerant Charge Calc
EMT
GCS & Burn Calculator
Plumber
Pipe Sizing Tool
Simple process
How It Works
Step 01
Pick Your Trade
Choose from 43 specialized apps built for your exact certification — electrician, HVAC, EMT, crane, and more.
Step 02
Use Real Tools
Built-in calculators — voltage drop, pipe sizing, load charts — tools you'll actually use on the job, not just for studying.
Step 03
Pass First Try
Plans from $9.99/mo — or grab the $59.99 lifetime deal. No lock-in. Cancel anytime.
Popular Exam Prep Apps
43 apps total · 40,930+ practice questions
Pricing
Pay Once. Keep Forever.
Competitors charge $69.99–$99.99 a year and cut you off when you cancel. VoltExam is $59.99 once — all updates included.
Competitor prices verified June 2026.
VoltExam
$59.99/one-time
- ✓Pay once, keep forever
- ✓Full offline access
- ✓All updates included
- ✓No account required
Pocket Prep
$69.99/per year
- ✕Subscription required
- ✕Lose access if cancelled
- ✕Needs internet
- ✕Separate app per exam
Dearborn
$99.99/per year
- ✕Subscription required
- ✕Real estate only
- ✕Needs internet
- ✕Monthly billing
FAQ
Common Questions
Is VoltExam a subscription?
No — VoltExam is a one-time $59.99 lifetime purchase that covers all updates, with optional $9.99/month and $24.99/year plans if you prefer. Most competitors charge $69.99–$99.99 every year.
Do I need an account to try it?
No. You can take a free practice test right in your browser with no account and no download. Create an account only when you want to save progress or unlock the full question bank.
Does VoltExam work on Android?
Yes. VoltExam runs on iPhone and Android, plus any browser on the web. A growing set of apps are live on Google Play, and every trade is available on the web platform.
What happens if I don't pass my exam?
VoltExam's Pass Promise: if you complete the program and still don't pass, submit your official score report within 30 days and we'll add 4 months of access free (not a refund — all sales are final). See the Pass Promise page for the exact terms.
How many questions are included, and are they accurate?
Each app includes 1,000+ practice questions written and reviewed by licensed professionals, organized by exam topic, with full answer explanations — plus a built-in code-compliant tool (calculator or reference) for your trade.
Does it work offline?
Yes. The apps work fully offline — on the job site, in the truck, in a machine room, or anywhere with no signal. No internet required to study or use the tools.
Reviews
Trusted by Tradespeople
“Passed my CDL Hazmat on the first try. The placard guide alone was worth the price.”
Steve R.
CDL Driver · TX
Verified App Store review
“I use the voltage drop calculator on every job. The exam questions were a bonus.”
Marcus B.
Journeyman Electrician · FL
Verified App Store review
“Way cheaper than Pocket Prep and the questions were just as good.”
Christine T.
Real Estate Agent · CA
Verified App Store review
“Studied for 2 weeks with this app and passed my NCCCO. Worth every penny.”
James H.
Crane Operator · OH
Verified App Store review
“Finally an app that doesn't charge monthly. One price, done.”
Aaron W.
Journeyman Plumber · GA
Verified App Store review
“Cleared EPA 608 Universal on my first attempt. The refrigerant charge calculator is still on my phone.”
Derek M.
HVAC Technician · NC
Verified App Store review
Exam Prep Guides
Free Resource
Not ready to download yet? Get the free cheat sheet for your exam.
Free resource
Get the Free Cheat Sheet
The top 20 most-tested facts for your exam — in one page. No fluff. Delivered to your inbox instantly. Trusted by tradespeople across the US.
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