# Fault Current Calculator vs ChargeRight

The clearest difference is rating: ChargeRight at 5.0 against Fault Current Calculator's 3.0. ChargeRight also leads on update cadence (every 3 weeks vs every 4 months). Fault Current Calculator's advantage is ratings volume (27 vs 1). On price, ads, in-app purchases and monetization model 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 ChargeRight sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ChargeRight 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 1, so its average is the more settled of the two.

Fault Current Calculator ships an update every 4 months, ChargeRight every 3 weeks. The most recent releases landed on October 23, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Fault Current Calculator | ChargeRight |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (27 ratings)](https://appshunter.io/ios/app/fault-current-calculator/id647477910/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/chargeright/id6755695416/reviews)** |
| Number of ratings | **27** | 1 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 weeks** |
| Monetization | Freemium | Free with in-app purchases |
| Size | 25 MB | 8 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Cooper Bussmann, LLC](https://appshunter.io/developer/609315535) | [JASON LLOYD WALLS](https://appshunter.io/developer/1855640312) |

## 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 |


### ChargeRight

[App page](https://appshunter.io/ios/app/chargeright/id6755695416)

Determine if your home's electrical panel can support an EV charger with a professional load calculation. Get a clear report based on NEC code, saving you money on unnecessary upgrades.

**Highlights:** EV charger sizing calculator, NEC 220.82 load calculation, AI-powered panel photo analysis, Electrician call script, Shareable assessment report, Homeowner-focused guidance

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| EV Panel Assessment | $16.99 | one-time |


## Frequently asked questions

### Is Fault Current Calculator free?

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

### Is ChargeRight free?

ChargeRight is free to download, with in-app purchases available.

### Which has better reviews, Fault Current Calculator or ChargeRight?

ChargeRight is rated higher. Fault Current Calculator averages 3.0 out of 5 from 27 ratings, while ChargeRight averages 5.0 from 1 ratings.

### Do Fault Current Calculator or ChargeRight have ads?

Neither Fault Current Calculator nor ChargeRight shows ads.

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

Fault Current Calculator ships an update every 4 months, and ChargeRight every 3 weeks. Most recently, Fault Current Calculator was updated on October 23, 2026 and ChargeRight on October 11, 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.*