# Fault Current Calculator vs NEC Electrical Load Calculator

The clearest difference is review sentiment: NEC Electrical Load Calculator at 100% against Fault Current Calculator's 0%. NEC Electrical Load Calculator also leads on rating (5.0 vs 3.0) and update cadence (every 4 weeks vs every 4 months). Fault Current Calculator's advantage is ratings volume (27 vs 3) and iOS requirement (14.0 vs 18.6). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Fault Current Calculator sells 2 in-app purchases, starting at $4.99 per month and NEC Electrical Load Calculator sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

NEC Electrical Load Calculator holds the better App Store score, 5.0 against 3.0. That said, the two scores are not equally well evidenced: Fault Current Calculator has 27 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 0% of Fault Current Calculator's written reviews are positive against 100% of NEC Electrical Load Calculator's.

Fault Current Calculator ships an update every 4 months, NEC Electrical Load Calculator every 4 weeks. Both last shipped on November 13, 2026.

## The numbers

| Metric | Fault Current Calculator | NEC Electrical Load Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (27 ratings)](https://appshunter.io/ios/app/fault-current-calculator/id647477910/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/nec-electrical-load-calculator/id6785889421/reviews)** |
| Number of ratings | **27** | 3 |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 4 weeks** |
| Monetization | Freemium | Free with in-app purchases |
| Size | 25 MB | 12 MB |
| Requires iOS | **14.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Cooper Bussmann, LLC](https://appshunter.io/developer/609315535) | [V PUGAZHENTHI](https://appshunter.io/developer/491898049) |

## What reviewers say

### Fault Current Calculator

[App page](https://appshunter.io/ios/app/fault-current-calculator/id647477910)

This tool helps contractors, engineers, and electricians quickly calculate available fault current on single and three-phase electrical systems. It also assists in sizing fuses and conductors for various circuits and can generate labels for service equipment.

**Highlights:** Calculate available fault current, Size fuses and conductors, Generate service equipment labels, Single and three-phase system support, NEC® 110.24 compliance

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly Subscription | $4.99 | per month |
| Pro Annual Subscription | $39.99 | per year |


### NEC Electrical Load Calculator

[App page](https://appshunter.io/ios/app/nec-electrical-load-calculator/id6785889421)

This app calculates electrical loads for various applications, including residential and commercial services, branch circuits, and motor circuits, adhering to the 2023 NEC. It provides detailed step-by-step math and article citations for each calculation. Results can be exported as PDFs for permit submissions.

**Highlights:** Residential service size calculation, Commercial feeder and service sizing, Branch circuit wire and breaker sizing, Motor circuit calculations, Panel schedule editor, Cable tray fill and ampacity derating, PDF report export

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| NEC LOAD PRO | $9.99 | one-time |


## Frequently asked questions

### Is Fault Current Calculator free?

Fault Current Calculator is free to download, with in-app purchases available.

### Is NEC Electrical Load Calculator free?

NEC Electrical Load Calculator is free to download, with in-app purchases available.

### Which has better reviews, Fault Current Calculator or NEC Electrical Load Calculator?

NEC Electrical Load Calculator is rated higher. Fault Current Calculator averages 3.0 out of 5 from 27 ratings, while NEC Electrical Load Calculator averages 5.0 from 3 ratings.

### Do Fault Current Calculator or NEC Electrical Load Calculator have ads?

Neither Fault Current Calculator nor NEC Electrical Load Calculator shows ads.

### Which is updated more often, Fault Current Calculator or NEC Electrical Load Calculator?

Fault Current Calculator ships an update every 4 months, and NEC Electrical Load Calculator every 4 weeks. Most recently, Fault Current Calculator was updated on November 13, 2026 and NEC Electrical Load Calculator on November 13, 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.*