# Fault Current Calculator vs Trailer Check Pro

The clearest difference is in-app purchases: Trailer Check Pro at none against Fault Current Calculator's 2. On price, ads, device support and iOS requirement there is nothing between them.

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

## The numbers

| Metric | Fault Current Calculator | Trailer Check Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (27 ratings)](https://appshunter.io/ios/app/fault-current-calculator/id647477910/reviews)** | — |
| Number of ratings | **27** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 months | — |
| Monetization | Freemium | — |
| Size | 25 MB | 32 MB |
| Requires iOS | **14.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Cooper Bussmann, LLC](https://appshunter.io/developer/609315535) | [Greg Maendel](https://appshunter.io/developer/507756979) |

## 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 |


### Trailer Check Pro

[App page](https://appshunter.io/ios/app/trailer-check-pro/id6802115936)

**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 Trailer Check Pro free?

Trailer Check Pro is free to download, with no in-app purchases.

### Do Fault Current Calculator or Trailer Check Pro have ads?

Neither Fault Current Calculator nor Trailer Check Pro shows ads.

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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.*