# NEC Mastery vs Electrical Safety Standard Pro

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.

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.

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.

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.

## The numbers

| Metric | NEC Mastery | Electrical Safety Standard Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (174 ratings)](https://appshunter.io/ios/app/nec-mastery/id6720711044/reviews)** | [4.7 (3 ratings)](https://appshunter.io/ios/app/electrical-safety-standard-pro/id6741804803/reviews) |
| Number of ratings | **174** | 3 |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 3 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 127 MB | 88 MB |
| Requires iOS | 16 | **15.0** |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Webrich Software Limited](https://appshunter.io/developer/290203591) | [Erdem Kara](https://appshunter.io/developer/1015700209) |

## What reviewers say

### NEC Mastery

[App page](https://appshunter.io/ios/app/nec-mastery/id6720711044)

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:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Question Bank | $9.99 | per month |
| Full Question Bank | $24.99 | per 3 months |
| Full Question Bank | $39.99 | per 6 months |
| Full Question Bank | $59.99 | per year |


### Electrical Safety Standard Pro

[App page](https://appshunter.io/ios/app/electrical-safety-standard-pro/id6741804803)

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:** macOS Compatibility, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium - Weekly Subscription | $9.99 | per 7 days |
| Premium - Monthly Subscription | $24.99 | per month |
| Premium-Quarterly Subscription | $49.99 | per 3 months |
| Premium - Yearly Subscription | $99.99 | per year |


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*