# Wire Phase vs Fault Current Calculator

The clearest difference is price: Fault Current Calculator at Free against Wire Phase's $0.99. Fault Current Calculator also leads on update cadence (every 4 months vs every 57 months) and rating (3.1 vs 2.8). Wire Phase's advantage is in-app purchases (none vs 2) and review sentiment (20% vs 0%). On ratings volume, ads and device support there is nothing between them.

Fault Current Calculator is free to download; Wire Phase costs $0.99 up front. Fault Current Calculator sells 2 in-app purchases, starting at $4.99 per month. Wire Phase asks for nothing beyond the download.

Fault Current Calculator holds the better App Store score, 3.1 against 2.8. Both are backed by a comparable volume of ratings — 10 and 23 respectively. Written reviews complicate that: 20% of Wire Phase's written reviews are positive against 0% of Fault Current Calculator's, so the app with the better star average is not the one people write more warmly about.

Wire Phase ships an update every 57 months, Fault Current Calculator every 4 months. The most recent releases landed on October 6, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Wire Phase | Fault Current Calculator |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [2.8 (10 ratings)](https://appshunter.io/ios/app/wire-phase/id607866075/reviews) | **[3.1 (23 ratings)](https://appshunter.io/ios/app/fault-current-calculator/id647477910/reviews)** |
| Number of ratings | 10 | **23** |
| Positive reviews | **20.0% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 57 months | **Every 4 months** |
| Monetization | Paid | **Freemium** |
| Size | 16 MB | 25 MB |
| Requires iOS | **10.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [TRNSFR](https://appshunter.io/developer/472903828) | [Cooper Bussmann, LLC](https://appshunter.io/developer/609315535) |

## What reviewers say

### Wire Phase

[App page](https://appshunter.io/ios/app/wire-phase/id607866075)

This utility app helps electricians and DIYers quickly identify and number electrical phases in single and three-phase circuits. It provides color codes for common voltage configurations and allows for easy navigation and bookmarking of circuit numbers.

**Highlights:** Identify 120/240 single phase, Identify 120/208 three phase, Identify 277/480 three phase, Endless scrolling interface, Jump to circuit number, Tap to remember place

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

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Wire Phase free?

Wire Phase costs $0.99, with no in-app purchases.

### Is Fault Current Calculator free?

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

### Which has better reviews, Wire Phase or Fault Current Calculator?

Fault Current Calculator is rated higher. Wire Phase averages 2.8 out of 5 from 10 ratings, while Fault Current Calculator averages 3.1 from 23 ratings.

### Do Wire Phase or Fault Current Calculator have ads?

Neither Wire Phase nor Fault Current Calculator shows ads.

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

Wire Phase ships an update every 57 months, and Fault Current Calculator every 4 months. Most recently, Wire Phase was updated on October 6, 2026 and Fault Current Calculator on October 2, 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.*