Mike Holt's Electrical Toolbox vs Breaker Box
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
Breaker Box
Easily label and document every circuit in your electrical panel. Assign notes, rooms, and fixtures to breakers, and generate printable PDF legends for quick identification. Supports multi-panel management and cloud sync for data safety.
- Label circuits with notes, rooms, and fixtures
- Supports tandem splits, multi-pole, GFCI, and HACR
- Organize circuits by room and linked fixtures
- Generate printable PDF legends for panels
- Manage multiple panels and properties
- Cloud sync and automatic backups
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Stop guessing which breaker controls what. Whether you're a homeowner mapping a single panel or an electrician documenting multiple buildings, Breaker Box gives you a complete directory for every circuit — and lets you print a professional legend to match. LABEL EVERY CIRCUIT Assign notes, rooms, and fixtures to each breaker. Tandem splits, multi-pole circuits, GFCI outlets, and HACR systems all supported. Track wire gauge and size. Use custom phase colors for 1-, 2-, and 3-phase panels. ORGANIZE BY ROOM Link circuits to the rooms and fixtures they control — so you always know which breaker to flip, in seconds. PDF LEGENDS Export to PDF, sized to fit a panel sleeve or tape to the door. Adjust font scale per label for a professional result. MULTI-PANEL SUPPORT Manage multiple panels across one or more properties. Link breakers to sub-panels. PRO FEATURES • Unlimited panels • PDF export with custom print sizes • Cloud sync across all your devices • Custom fixture types and unlimited rooms • Import and export for client handoffs and device transfers BACKUP & RESTORE Automatic backups and cloud management keep your data safe. Every circuit, documented.
Screenshots
Verdict
The clearest difference is in-app purchases: Mike Holt's Electrical Toolbox at none against Breaker Box's 1. Mike Holt's Electrical Toolbox also leads on iOS requirement (14.0 vs 16.0). Breaker Box's advantage is update cadence (every 9 days vs every 3 months). On price, rating, review sentiment and ratings volume 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
Both are free to download. Breaker Box sells 1 one-off in-app purchase. Mike Holt's Electrical Toolbox asks for nothing beyond the download.
Mike Holt's Electrical Toolbox holds the better App Store score, 4.6 against 4.5. Both are backed by a comparable volume of ratings — 198 and 108 respectively. Written reviews complicate that: 77% of Mike Holt's Electrical Toolbox's written reviews are positive against 78% of Breaker Box's, so the app with the better star average is not the one people write more warmly about.
Mike Holt's Electrical Toolbox ships an update every 3 months, Breaker Box every 9 days. Both last shipped on November 6, 2026.
| Parameter | Mike Holt's Electrical Toolbox | Breaker Box |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (198 ratings) — better | 4.5 (108 ratings) |
| Positive reviews | 76.7% of reviews | 77.8% of reviews — better |
| Number of ratings | 198 — better | 108 |
| Update frequency | Every 3 months | Every 9 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 14.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 26 MB | 62 MB |
| Age rating | 4+ | 4+ |
| Developer | Mike Holt Enterprises | Brett Pappas |
Customer experience
Mike Holt's Electrical Toolbox
Breaker Box
Bugs and 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
Breaker Box
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Mike Holt's Electrical Toolbox
No in-app purchases
Breaker Box
- Lifetime Pro License$9.99
Questions
Is Mike Holt's Electrical Toolbox free?
Is Breaker Box free?
Which has better reviews, Mike Holt's Electrical Toolbox or Breaker Box?
Do Mike Holt's Electrical Toolbox or Breaker Box have ads?
Which is updated more often, Mike Holt's Electrical Toolbox or Breaker Box?
Other comparisons
