# Trinity vs NEC Master Exam Prep

The clearest difference is in-app purchases: Trinity at none against NEC Master Exam Prep's 2. Trinity also leads on device support (4 vs 1). NEC Master Exam Prep's advantage is update cadence (every 2 weeks vs every 25 months). On price, ads and iOS requirement there is nothing between them.

Both are free to download. NEC Master Exam Prep sells 2 in-app purchases, starting at $9.99 per month. Trinity asks for nothing beyond the download.

Trinity ships an update every 25 months, NEC Master Exam Prep every 2 weeks. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Trinity | NEC Master Exam Prep |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.7 (6 ratings)](https://appshunter.io/ios/app/nec-master-exam-prep/id6642891253/reviews)** |
| Number of ratings | — | **6** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 25 months | **Every 2 weeks** |
| Monetization | — | Subscription |
| Size | 56 MB | 12 MB |
| Requires iOS | **15.1** | 16.0 |
| Devices | **iPhone, iPad, iPod, Apple TV** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Trinity Lutheran Church of Pell Lake](https://appshunter.io/developer/1458919231) | [Cargo Teleport Inc](https://appshunter.io/developer/1761832181) |

## What reviewers say

### Trinity

[App page](https://appshunter.io/ios/app/trinity-pell-lake/id1200004168)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### NEC Master Exam Prep

[App page](https://appshunter.io/ios/app/nec-master-exam-prep/id6642891253)

Prepare for your electrical code certification with a comprehensive study tool. Access over 2,500 practice questions with detailed explanations and track your progress. Create custom tests to focus on challenging topics and ensure you're studying the most current code standards.

**Highlights:** Extensive question bank (2,500+), In-depth explanations for answers, Progress analytics and performance tracking, Custom test creation, Up-to-date 2023 NEC content, Targeted study for electrical professionals

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium monthly subscription | $9.99 | per month |
| Lifetime version | $24.99 | one-time |


## Frequently asked questions

### Is Trinity free?

Trinity is free to download, with no in-app purchases.

### Is NEC Master Exam Prep free?

NEC Master Exam Prep is free to download, with in-app purchases available.

### Do Trinity or NEC Master Exam Prep have ads?

Neither Trinity nor NEC Master Exam Prep shows ads.

### Which is updated more often, Trinity or NEC Master Exam Prep?

Trinity ships an update every 25 months, and NEC Master Exam Prep every 2 weeks. Most recently, Trinity was updated on October 26, 2026 and NEC Master Exam Prep on October 24, 2026.

---

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