Comparison

NEC Mastery vs Electrical Safety Standard Pro

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

NEC Mastery

Prepare for electrician certification exams with over 8,000 practice questions and detailed explanations. Access a comprehensive quick reference guide and 20 professional NEC calculators for on-the-job use. Track work hours with a built-in log for state board submissions.

Highlights
  • 8000+ exam-style questions
  • 20 NEC calculators
  • Quick reference guide
  • Electrician hour log
  • 2023/2024 NEC Code updates
  • Customizable study syllabus
  • Mock tests and performance tracking
Features
Read full description

Developed with insights from licensed electricians and instructors nationwide, NEC Mastery has helped thousands pass their certification exams. Built around the 2023 NEC Code with 2024 updates. Prepare for your NEC Certification Exam with the most comprehensive study tool designed for Journeyman, Master Electricians, Electrical Contractors, Maintenance and Sign Electricians, Inspectors, and Examiners. NOW IN ENGLISH AND SPANISH Every question, calculator, reference table and help article is available in both languages. Terminology follows NFPA 70, Código Eléctrico Nacional — the official Spanish edition of the NEC — so what you study matches the exam you sit. Texas TDLR offers Spanish-language electrician exams through PSI against the 2023 NEC, which is exactly the edition this app is written to. Pick your language on first launch or change it any time in Settings; the whole app switches instantly, read-aloud voice included. Quick Reference Your pocket electrician's reference with 13 categories and 100+ items — all offline: • Electrical Formulas (Ohm's Law, AC/DC power, impedance, power factor) • Ampacity Tables (NEC 310.16, temperature derating, conduit fill adjustment) • Wire Properties & Insulation Types • Conduit Fill (EMT, RMC, PVC) & Conduit Bending • Box Fill Calculations • Voltage Drop Tables & Max Distance Lookups • NEMA Plug/Receptacle Configurations • Motor FLC Tables & Branch Circuit Sizing • Grounding (EGC & GEC Sizing, Electrode Types) • Transformer Formulas & OCPD Sizing • Electrical Symbols & Unit Conversions Bookmark any reference, search by NEC article number or keyword, and jump directly to related calculators. 20 NEC Calculators Professional-grade calculators with NEC code references: Ohm's Law, Power Converter, Wire Size, Ampacity Derating, Voltage Drop, Conduit Fill, Box Fill, Breaker Sizing, EGC Size, GEC Size, Motor Circuit, Motor Feeder, Lighting Load, EV Charger Load, Residential Load, Commercial Load, Transformer OCPD, Transformer Conductor, Cover Depth, and Fault Current. Electrician Hour Log Track your apprentice or journeyman work hours: • 12 work categories and 4 sector types • Dashboard with charts and goal tracking • PDF export for state board submissions • iCloud sync across all your devices Books & Tools Curated recommendations from working electricians — code books, test instruments, hand tools, and study guides. Exams Covered - Master & Journeyman Electrician: F16, F17, G17, T17 - Residential Electrician: F18, G18, T18 - Maintenance & Sign Electricians: F19, F21, F22, F23 - Electrical Contractor: F49 - Inspectors & Examiners: E1, E2, E3 Why Choose NEC Mastery - 8,000+ exam-style questions with answers, NEC references, and detailed explanations - Fully bilingual — English and Spanish, switchable at any time - 20 professional NEC calculators for on-the-job use - Quick Reference with 100+ items — ampacity, formulas, NEMA configs, and more - Electrician hour log with iCloud sync and PDF export - Covers the 2023 NEC Code with 2024 updates - Choose your own syllabus — customize down to each individual article - Mock tests and performance tracking to simulate real exams - Instant feedback mode with explanations as you practice - Dark mode and adjustable text size Study by Chapter 1 General · 2 Wiring and Protection · 3 Wiring Methods and Materials · 4 Equipment for General Use · 5 Special Occupancies · 6 Special Equipment · 7 Special Conditions · 8 Communications Systems Who Is This App For? Apprentices and licensed electricians, residential/commercial/industrial electricians, contractors, inspectors, safety managers, engineers, and field technicians. Privacy Policy: https://www.webrichsoftware.com/privacy.html EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Join thousands of electricians who have passed their NEC exams with NEC Mastery.

About

Electrical Safety Standard Pro

Prepare for electrical safety and code examinations with AI-powered practice tests and mock exams. Track your progress and assess your readiness with curated questions reflecting current industry standards. This independent tool is designed to enhance your study experience.

Highlights
  • AI-driven learning platform
  • Curated and categorized questions
  • Realistic mock tests
  • Progress saving via user account
  • Up-to-date AI technology
  • Comprehensive course material
Features
Read full description

Welcome to the Electrical Safety Standard Pro, your ultimate companion in mastering the essential aspects of Electrical Code and Electrical Safety In Workplace Standard. Our app is tailored to meet your training needs, providing comprehensive preparation for the upcoming examinations. Our AI-driven learning platform boasts questions meticulously curated and categorized to cover the breadth of Electrical Code and Electrical Safety In Workplace training. Experience the real test atmosphere with our carefully crafted mock tests, each presenting a random selection of 25 questions. This diverse range covers scenarios, test revision, and practice, allowing you to assess your readiness with confidence. Our AI technology ensures that questions are always up-to-date, reflecting the latest standards in the field. Save your progress effortlessly through your user account for future reference, adding convenience to your preparation. Whether you're a first-time test taker or in need of a quick refresher, our comprehensive course and mock tests are designed to support you at every step. Don't leave your success to chance; seize the opportunity to utilize our AI-supported mock tests and training resources. Ensure you're well-prepared, confident, and ready to excel in your journey! This app is an independent tool designed to assist users in preparing for exams using AI-assisted practice tests. It is not affiliated with any official or educational institutions, companies or governmental organizations. The questions in the practice tests are based on real-world exam patterns, but due to the AI-driven model, some questions may occasionally be out of context or differ from the actual exam content. Efforts are made to ensure the accuracy and relevance of the questions, and any such discrepancies will be reviewed and corrected. Please note, this app is intended solely as a study aid and does not guarantee specific exam results. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

NEC Mastery4 screens
Electrical Safety Standard Pro4 screens

Verdict

The call

The clearest difference is update cadence: NEC Mastery at fortnightly against Electrical Safety Standard Pro's every 3 months. NEC Mastery also leads on ratings volume (174 vs 3). On price, rating, ads and in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. NEC Mastery sells 4 in-app purchases, starting at $9.99 per month and Electrical Safety Standard Pro sells 4 in-app purchases, starting at $9.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

NEC Mastery holds the better App Store score, 4.8 against 4.7. That said, the two scores are not equally well evidenced: NEC Mastery has 174 ratings behind it against 3, so its average is the more settled of the two.

UpkeepUpdate frequency

NEC Mastery ships an update fortnightly, Electrical Safety Standard Pro every 3 months. The most recent releases landed on November 8, 2026 and October 30, 2026 respectively.

Scorecard2 real differences · 8 level
NEC Mastery versus Electrical Safety Standard Pro: the parameters behind the verdict, then further details
ParameterNEC MasteryElectrical Safety Standard Pro
PriceFreeFree
Rating4.8 (174 ratings) — better4.7 (3 ratings)
Positive reviews80.0% of reviews—
Number of ratings174 — better3
Update frequencyFortnightly — betterEvery 3 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad, iPod
Requires iOS1615.0 — better
Further details — not scored
Size127 MB88 MB
Age rating4+4+
DeveloperWebrich Software LimitedErdem Kara

Customer experience

NEC Mastery

All ratings165 ratings
Positive95.8%
Neutral2.4%
Negative1.8%
Written reviews10 reviews
Positive80.0%
Neutral20.0%
Negative0.0%

Electrical Safety Standard Pro

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

4 purchases

NEC Mastery

Subscriptions4
  • Full Question Bank$9.991 Month
  • Full Question Bank$24.993 Months
  • Full Question Bank$39.996 Months
Show 1 more
  • Full Question Bank$59.991 Year
4 purchases

Electrical Safety Standard Pro

Subscriptions4
  • Premium - Weekly Subscription$9.997 Days
  • Premium - Monthly Subscription$24.991 Month
  • Premium-Quarterly Subscription$49.993 Months
Show 1 more
  • Premium - Yearly Subscription$99.991 Year

Questions

Is NEC Mastery free?
NEC Mastery is free to download, with in-app purchases available.
Is Electrical Safety Standard Pro free?
Electrical Safety Standard Pro is free to download, with in-app purchases available.
Which has better reviews, NEC Mastery or Electrical Safety Standard Pro?
NEC Mastery is rated higher. NEC Mastery averages 4.8 out of 5 from 174 ratings, while Electrical Safety Standard Pro averages 4.7 from 3 ratings.
Do NEC Mastery or Electrical Safety Standard Pro have ads?
Neither NEC Mastery nor Electrical Safety Standard Pro shows ads.
Which is updated more often, NEC Mastery or Electrical Safety Standard Pro?
NEC Mastery ships an update fortnightly, and Electrical Safety Standard Pro every 3 months. Most recently, NEC Mastery was updated on November 8, 2026 and Electrical Safety Standard Pro on October 30, 2026.

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