# Mike Holt's Electrical Toolbox vs Breaker Box

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.

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.

## The numbers

| Metric | Mike Holt's Electrical Toolbox | Breaker Box |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (198 ratings)](https://appshunter.io/ios/app/mike-holts-electrical-toolbox/id1406630647/reviews)** | [4.5 (108 ratings)](https://appshunter.io/ios/app/breaker-box-panel-directory/id1459288663/reviews) |
| Number of ratings | **198** | 108 |
| Positive reviews | 76.7% of reviews | **77.8% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 9 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 26 MB | 62 MB |
| Requires iOS | **14.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Mike Holt Enterprises](https://appshunter.io/developer/1349960186) | [Brett Pappas](https://appshunter.io/developer/1435218098) |

## What reviewers say

### 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


### Breaker Box

[App page](https://appshunter.io/ios/app/breaker-box-panel-directory/id1459288663)

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.

**Highlights:** 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

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Pro License | $9.99 | one-time |


## Frequently asked questions

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

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

### Is Breaker Box free?

Breaker Box is free to download, with in-app purchases available.

### Which has better reviews, Mike Holt's Electrical Toolbox or Breaker Box?

Mike Holt's Electrical Toolbox is rated higher. Mike Holt's Electrical Toolbox averages 4.6 out of 5 from 198 ratings, while Breaker Box averages 4.5 from 108 ratings.

### Do Mike Holt's Electrical Toolbox or Breaker Box have ads?

Neither Mike Holt's Electrical Toolbox nor Breaker Box shows ads.

### Which is updated more often, Mike Holt's Electrical Toolbox or Breaker Box?

Mike Holt's Electrical Toolbox ships an update every 3 months, and Breaker Box every 9 days. Most recently, Mike Holt's Electrical Toolbox was updated on November 6, 2026 and Breaker Box on November 6, 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.*