# Wire Phase vs Mike Holt's Electrical Toolbox

The clearest difference is review sentiment: Mike Holt's Electrical Toolbox at 77% against Wire Phase's 20%. Mike Holt's Electrical Toolbox also leads on price (Free vs $0.99) and rating (4.6 vs 2.8). Wire Phase's advantage is iOS requirement (10.0 vs 14.0). On ads, in-app purchases and device support there is nothing between them.

Mike Holt's Electrical Toolbox is free to download; Wire Phase costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Mike Holt's Electrical Toolbox holds the better App Store score, 4.6 against 2.8. That said, the two scores are not equally well evidenced: Mike Holt's Electrical Toolbox has 197 ratings behind it against 10, so its average is the more settled of the two. Written reviews point the same way: 20% of Wire Phase's written reviews are positive against 77% of Mike Holt's Electrical Toolbox's.

Wire Phase ships an update every 57 months, Mike Holt's Electrical Toolbox every 3 months. The most recent releases landed on October 6, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Wire Phase | Mike Holt's Electrical Toolbox |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [2.8 (10 ratings)](https://appshunter.io/ios/app/wire-phase/id607866075/reviews) | **[4.6 (197 ratings)](https://appshunter.io/ios/app/mike-holts-electrical-toolbox/id1406630647/reviews)** |
| Number of ratings | 10 | **197** |
| Positive reviews | 20.0% of reviews | **76.7% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 57 months | **Every 3 months** |
| Monetization | Paid | **Free** |
| Size | 16 MB | 26 MB |
| Requires iOS | **10.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [TRNSFR](https://appshunter.io/developer/472903828) | [Mike Holt Enterprises](https://appshunter.io/developer/1349960186) |

## 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


### Mike Holt's Electrical Toolbox

[App page](https://appshunter.io/ios/app/mike-holts-electrical-toolbox/id1406630647)

This app provides essential calculations for electricians, inspectors, contractors, and engineers. It helps determine conductor sizing, circuit protection, race sizing, and grounding conductor sizes for various electrical equipment and services.

**Highlights:** Conductor sizing, Voltage drop limitations, Circuit protection sizing, Race sizing, Equipment grounding conductor sizing, Dwelling-unit service calculations

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

**In-app purchases:** none

**What reviewers like**

- 👍 Great app for electricians
- 💡 Provides code article references
- 👍 Useful for on-the-spot reference
- 👍 Excellent for verifying calculations
- 👍 Helpful for exam preparation

**What reviewers complain about**

- 🐛 Emailing results not working
- 🐛 Outdated information
- 🐛 Load calc a little clunky
- 🐛 Content setup needs overhaul
- 🐛 Video series lacks completion system

**Reported bugs**

- Cannot email results
- Video player widescreen exit bug
- Previous calculation data not erased
- App content is outdated

**Requested features**

- Increase transformer capacity to 225kva
- Add option to print load calc
- Update to NEC 2020
- Add completion system for video series
- Refine user interface for better usability


## Frequently asked questions

### Is Wire Phase free?

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

### Is Mike Holt's Electrical Toolbox free?

Mike Holt's Electrical Toolbox is free to download, with no in-app purchases.

### Which has better reviews, Wire Phase or Mike Holt's Electrical Toolbox?

Mike Holt's Electrical Toolbox is rated higher. Wire Phase averages 2.8 out of 5 from 10 ratings, while Mike Holt's Electrical Toolbox averages 4.6 from 197 ratings.

### Do Wire Phase or Mike Holt's Electrical Toolbox have ads?

Neither Wire Phase nor Mike Holt's Electrical Toolbox shows ads.

### Which is updated more often, Wire Phase or Mike Holt's Electrical Toolbox?

Wire Phase ships an update every 57 months, and Mike Holt's Electrical Toolbox every 3 months. Most recently, Wire Phase was updated on October 6, 2026 and Mike Holt's Electrical Toolbox on October 16, 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.*