# Fault Current Calculator vs Panel Legend 2

The clearest difference is price: Fault Current Calculator at Free against Panel Legend 2's $6.99. Fault Current Calculator also leads on rating (3.0 vs 2.3) and ratings volume (27 vs 3). Panel Legend 2's advantage is in-app purchases (none vs 2) and review sentiment (14% vs 0%). On update cadence, ads and device support there is nothing between them.

Fault Current Calculator is free to download; Panel Legend 2 costs $6.99 up front. Fault Current Calculator sells 2 in-app purchases, starting at $4.99 per month. Panel Legend 2 asks for nothing beyond the download.

Fault Current Calculator holds the better App Store score, 3.0 against 2.3. 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. Written reviews complicate that: 0% of Fault Current Calculator's written reviews are positive against 14% of Panel Legend 2's, so the app with the better star average is not the one people write more warmly about.

Fault Current Calculator ships an update every 4 months, Panel Legend 2 every 3 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Fault Current Calculator | Panel Legend 2 |
| --- | --- | --- |
| Price | **Free** | $6.99 |
| Rating | **[3.0 (27 ratings)](https://appshunter.io/ios/app/fault-current-calculator/id647477910/reviews)** | [2.3 (3 ratings)](https://appshunter.io/ios/app/panel-legend-2/id1569692089/reviews) |
| Number of ratings | **27** | 3 |
| Positive reviews | 0.0% of reviews | **14.3% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 months** |
| Monetization | **Freemium** | Paid |
| Size | 25 MB | 19 MB |
| Requires iOS | **14.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Cooper Bussmann, LLC](https://appshunter.io/developer/609315535) | [Snappy Appz Inc.](https://appshunter.io/developer/375591377) |

## 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 |


### Panel Legend 2

[App page](https://appshunter.io/ios/app/panel-legend-2/id1569692089)

Easily create professional panel legends for any project size. This universal app supports multiple devices and offers features like iCloud sync, PDF export, and color-coded circuit numbers. It also includes helpful construction calculators.

**Highlights:** Create legends of any size, iCloud support for cross-device sync, Export legends as PDF, Color-coded circuit numbers, Construction style calculator included, Supports inches or centimeters

**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 Panel Legend 2 free?

Panel Legend 2 costs $6.99, with no in-app purchases.

### Which has better reviews, Fault Current Calculator or Panel Legend 2?

Fault Current Calculator is rated higher. Fault Current Calculator averages 3.0 out of 5 from 27 ratings, while Panel Legend 2 averages 2.3 from 3 ratings.

### Do Fault Current Calculator or Panel Legend 2 have ads?

Neither Fault Current Calculator nor Panel Legend 2 shows ads.

### Which is updated more often, Fault Current Calculator or Panel Legend 2?

Fault Current Calculator ships an update every 4 months, and Panel Legend 2 every 3 months. Most recently, Fault Current Calculator was updated on November 1, 2026 and Panel Legend 2 on November 3, 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.*