# Fault Current Calculator vs Generac Field Pro

The clearest difference is in-app purchases: Generac Field Pro at none against Fault Current Calculator's 2. Generac Field Pro also leads on update cadence (fortnightly vs every 4 months) and review sentiment (11% vs 0%). Fault Current Calculator's advantage is iOS requirement (14.0 vs 16.0). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Fault Current Calculator sells 2 in-app purchases, starting at $4.99 per month. Generac Field Pro asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 3.1 for Fault Current Calculator against 3.1 for Generac Field Pro. Both are backed by a comparable volume of ratings — 23 and 26 respectively. Written reviews are what separate them: 0% of Fault Current Calculator's written reviews are positive against 11% of Generac Field Pro's.

Fault Current Calculator ships an update every 4 months, Generac Field Pro fortnightly. The most recent releases landed on October 2, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Fault Current Calculator | Generac Field Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.1 (23 ratings)](https://appshunter.io/ios/app/fault-current-calculator/id647477910/reviews) | [3.1 (26 ratings)](https://appshunter.io/ios/app/generac-field-pro/id6550921902/reviews) |
| Number of ratings | 23 | **26** |
| Positive reviews | 0.0% of reviews | **11.1% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 months | **Fortnightly** |
| Monetization | Freemium | **Free** |
| Size | 25 MB | 71 MB |
| Requires iOS | **14.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Cooper Bussmann, LLC](https://appshunter.io/developer/609315535) | [Generac Power Systems, Inc.](https://appshunter.io/developer/829129500) |

## 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 |


### Generac Field Pro

[App page](https://appshunter.io/ios/app/generac-field-pro/id6550921902)

Streamline the installation, servicing, and registration of energy systems. Features guided workflows, smart firmware updates, and comprehensive diagnostics for efficient system management.

**Highlights:** Guided commissioning workflow, Smart firmware updates, Full system testing, Product diagnostics, In-app activation and registration

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

**In-app purchases:** none


## Frequently asked questions

### Is Fault Current Calculator free?

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

### Is Generac Field Pro free?

Generac Field Pro is free to download, with no in-app purchases.

### Which has better reviews, Fault Current Calculator or Generac Field Pro?

Fault Current Calculator and Generac Field Pro are both rated 3.1 out of 5 on the App Store, from 23 and 26 ratings respectively.

### Do Fault Current Calculator or Generac Field Pro have ads?

Neither Fault Current Calculator nor Generac Field Pro shows ads.

### Which is updated more often, Fault Current Calculator or Generac Field Pro?

Fault Current Calculator ships an update every 4 months, and Generac Field Pro fortnightly. Most recently, Fault Current Calculator was updated on October 2, 2026 and Generac Field Pro on October 14, 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.*