# Fault Current Calculator vs Eaton EM Install

The clearest difference is rating: Eaton EM Install at 4.0 against Fault Current Calculator's 3.0. Eaton EM Install also leads on in-app purchases (none vs 2). Fault Current Calculator's advantage is ratings volume (27 vs 3). On price, update cadence, ads 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. Eaton EM Install asks for nothing beyond the download.

Eaton EM Install holds the better App Store score, 4.0 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.

Both ship on a similar rhythm, roughly every 4 months. The most recent releases landed on October 23, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Fault Current Calculator | Eaton EM Install |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (27 ratings)](https://appshunter.io/ios/app/fault-current-calculator/id647477910/reviews) | **[4.0 (3 ratings)](https://appshunter.io/ios/app/eaton-em-install/id1530627437/reviews)** |
| Number of ratings | **27** | 3 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 months | Every 4 months |
| Monetization | Freemium | **Free** |
| Size | 25 MB | 32 MB |
| Requires iOS | 14.0 | **13.4** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Cooper Bussmann, LLC](https://appshunter.io/developer/609315535) | [Eaton Corporation](https://appshunter.io/developer/439590491) |

## 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 |


### Eaton EM Install

[App page](https://appshunter.io/ios/app/eaton-em-install/id1530627437)

Easily connect Eaton Smart Breakers to your Wi-Fi network. This utility allows you to associate devices with your organization, set up locations, and manage Wi-Fi configurations.

**Highlights:** Connect Eaton Smart Breakers to Wi-Fi, Associate devices with organizations, Create and manage locations, Update Wi-Fi settings for breakers

**Features:** macOS Compatibility

**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 Eaton EM Install free?

Eaton EM Install is free to download, with no in-app purchases.

### Which has better reviews, Fault Current Calculator or Eaton EM Install?

Eaton EM Install is rated higher. Fault Current Calculator averages 3.0 out of 5 from 27 ratings, while Eaton EM Install averages 4.0 from 3 ratings.

### Do Fault Current Calculator or Eaton EM Install have ads?

Neither Fault Current Calculator nor Eaton EM Install shows ads.

### Which is updated more often, Fault Current Calculator or Eaton EM Install?

Fault Current Calculator ships an update every 4 months, and Eaton EM Install every 4 months. Most recently, Fault Current Calculator was updated on October 23, 2026 and Eaton EM Install 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.*