Wire Phase vs Mike Holt's Electrical Toolbox
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Wire Phase
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.
- 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
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Wire Phase helps you identify and number the different phases to their circuit number. * 120/240 single phase (Black, Red) * 120/208 three phase (Black, Red, Blue) * 277/480 three phase (Brown, Orange, Yellow) Pretty dang simple: * Endless scrolling * Type circuit number to immediately jump to the specific phase color * Tap a row to remember your place @@ Big thanks to Chris McDowell
Mike Holt's Electrical Toolbox
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.
- Conductor sizing
- Voltage drop limitations
- Circuit protection sizing
- Race sizing
- Equipment grounding conductor sizing
- Dwelling-unit service calculations
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Mike Holt, the industry leader in the electrical industry (MikeHolt.com) has created an amazing, practical and useful app for the electrician, inspector, instructor, contractor and engineer. The app contains conductor sizing (including voltage drop limitations), circuit protection sizing, race sizing, equipment grounding conductor sizing for electric heating equipment (commercial and Residential), air-conditioning equipment (commercial and Residential), motors (commercial and Residential), Transformers (commercial) , and dwelling-unit service calculations and sizing.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Wire Phase | Mike Holt's Electrical Toolbox |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 2.8 (10 ratings) | 4.6 (197 ratings) — better |
| Positive reviews | 20.0% of reviews | 76.7% of reviews — better |
| Number of ratings | 10 | 197 — better |
| Update frequency | Every 57 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 10.0 — better | 14.0 |
| Further details — not scored | ||
| Size | 16 MB | 26 MB |
| Age rating | 4+ | 4+ |
| Developer | TRNSFR | Mike Holt Enterprises |
Customer experience
Wire Phase
Mike Holt's Electrical Toolbox
Bugs and requests
Wire Phase
Not enough reviews yet to summarise bugs or requests.
Mike Holt's Electrical Toolbox
Reported bugs
4 issues- Cannot email results
- Video player widescreen exit bug
- Previous calculation data not erased
- App content is outdated
Requested features
6 requests- 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
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- Add more features, willing to pay extra
In-app purchases
Wire Phase
No in-app purchases
Mike Holt's Electrical Toolbox
No in-app purchases
Questions
Is Wire Phase free?
Is Mike Holt's Electrical Toolbox free?
Which has better reviews, Wire Phase or Mike Holt's Electrical Toolbox?
Do Wire Phase or Mike Holt's Electrical Toolbox have ads?
Which is updated more often, Wire Phase or Mike Holt's Electrical Toolbox?
Other comparisons
