# Overhead Install Guide vs Mike Holt's Electrical Toolbox

The clearest difference is ratings volume: Mike Holt's Electrical Toolbox at 196 against Overhead Install Guide's 5. Mike Holt's Electrical Toolbox also leads on update cadence (every 3 months vs every 9 months) and device support (3 vs 1). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 4.6 for Overhead Install Guide against 4.6 for Mike Holt's Electrical Toolbox. That said, the two scores are not equally well evidenced: Mike Holt's Electrical Toolbox has 196 ratings behind it against 5, so its average is the more settled of the two.

Overhead Install Guide ships an update every 9 months, Mike Holt's Electrical Toolbox every 3 months. The most recent releases landed on October 6, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Overhead Install Guide | Mike Holt's Electrical Toolbox |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (5 ratings)](https://appshunter.io/ios/app/overhead-install-guide/id1353512021/reviews) | **[4.6 (196 ratings)](https://appshunter.io/ios/app/mike-holts-electrical-toolbox/id1406630647/reviews)** |
| Number of ratings | 5 | **196** |
| Positive reviews | — | 76.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 3 months** |
| Monetization | Free | Free |
| Size | 21 MB | 26 MB |
| Requires iOS | 16.6 | **14.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Southwire Company](https://appshunter.io/developer/440338423) | [Mike Holt Enterprises](https://appshunter.io/developer/1349960186) |

## What reviewers say

### Overhead Install Guide

[App page](https://appshunter.io/ios/app/overhead-install-guide/id1353512021)

This utility app offers Southwire's official recommendations for installing overhead transmission electrical conductors. It provides essential field information and includes a calculator for determining bullwheel and block diameters.

**Highlights:** Overhead conductor installation recommendations, Information from Overhead Conductor Manual, Industry standard IEEE 524 data, Bullwheel and block diameter calculator

**Features:** macOS Compatibility

**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 Overhead Install Guide free?

Overhead Install Guide is free to download, 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, Overhead Install Guide or Mike Holt's Electrical Toolbox?

Mike Holt's Electrical Toolbox is rated higher. Overhead Install Guide averages 4.6 out of 5 from 5 ratings, while Mike Holt's Electrical Toolbox averages 4.6 from 196 ratings.

### Do Overhead Install Guide or Mike Holt's Electrical Toolbox have ads?

Neither Overhead Install Guide nor Mike Holt's Electrical Toolbox shows ads.

### Which is updated more often, Overhead Install Guide or Mike Holt's Electrical Toolbox?

Overhead Install Guide ships an update every 9 months, and Mike Holt's Electrical Toolbox every 3 months. Most recently, Overhead Install Guide was updated on October 6, 2026 and Mike Holt's Electrical Toolbox on October 21, 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.*