# Fault Current Calculator vs NEC Load Calculator

The clearest difference is review sentiment: NEC Load Calculator at 100% against Fault Current Calculator's 0%. NEC Load Calculator also leads on rating (5.0 vs 3.0) and monetization model (free vs freemium). 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 device support 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 Load Calculator sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

NEC 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 Load Calculator's.

Fault Current Calculator ships an update every 4 months, NEC Load Calculator every 3 weeks. The most recent releases landed on November 1, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Fault Current Calculator | NEC 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-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 3 weeks** |
| Monetization | Freemium | **Free** |
| 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 Load Calculator

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

This app performs electrical load calculations based on the NEC 2023 code. It offers modules for residential, commercial, motor, and branch circuit calculations, along with panel scheduling and PDF export. Designed for licensed electricians and contractors.

**Highlights:** NEC 2023 load calculations, Residential, commercial, motor, branch circuit modules, Panel schedule editor, Step-by-step calculation results, Panel layout generation, PDF export

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| NEC LOAD PRO | $7.99 | one-time |


## Frequently asked questions

### Is Fault Current Calculator free?

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

### Is NEC Load Calculator free?

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

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

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

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

Neither Fault Current Calculator nor NEC Load Calculator shows ads.

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

Fault Current Calculator ships an update every 4 months, and NEC Load Calculator every 3 weeks. Most recently, Fault Current Calculator was updated on November 1, 2026 and NEC Load Calculator on November 4, 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.*