# Fault Current Calculator vs PMI View

The clearest difference is rating: PMI View at 5.0 against Fault Current Calculator's 3.1. PMI View also leads on in-app purchases (none vs 2) and update cadence (every 2 months vs every 4 months). Fault Current Calculator's advantage is ratings volume (23 vs 4) and iOS requirement (14.0 vs 18.0). On price, 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. PMI View asks for nothing beyond the download.

PMI View holds the better App Store score, 5.0 against 3.1. That said, the two scores are not equally well evidenced: Fault Current Calculator has 23 ratings behind it against 4, so its average is the more settled of the two.

Fault Current Calculator ships an update every 4 months, PMI View every 2 months. The most recent releases landed on October 2, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Fault Current Calculator | PMI View |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.1 (23 ratings)](https://appshunter.io/ios/app/fault-current-calculator/id647477910/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/pmi-view/id6465390024/reviews)** |
| Number of ratings | **23** | 4 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | Freemium | **Free** |
| Size | 25 MB | 242 MB |
| Requires iOS | **14.0** | 18.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 17+ | 4+ |
| Developer | [Cooper Bussmann, LLC](https://appshunter.io/developer/609315535) | [Power Monitors, Incorporated](https://appshunter.io/developer/540822326) |

## 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 |


### PMI View

[App page](https://appshunter.io/ios/app/pmi-view/id6465390024)

This application provides a platform for viewing and analyzing power quality data from field devices. It allows real-time inspection of waveforms, vector diagrams, harmonics, and meter readings. Recordings can be easily downloaded, inspected, and exported.

**Highlights:** Real-time waveform viewing, Vector diagram analysis, Harmonics inspection, Meter readings, Downloadable recordings, Exportable data

**Features:** macOS Compatibility, Apple Watch app, 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 PMI View free?

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

### Which has better reviews, Fault Current Calculator or PMI View?

PMI View is rated higher. Fault Current Calculator averages 3.1 out of 5 from 23 ratings, while PMI View averages 5.0 from 4 ratings.

### Do Fault Current Calculator or PMI View have ads?

Neither Fault Current Calculator nor PMI View shows ads.

### Which is updated more often, Fault Current Calculator or PMI View?

Fault Current Calculator ships an update every 4 months, and PMI View every 2 months. Most recently, Fault Current Calculator was updated on October 2, 2026 and PMI View on October 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.*