# Overhead Install Guide vs Kopperfield

The clearest difference is rating: Overhead Install Guide at 4.6 against Kopperfield's 3.9. Overhead Install Guide also leads on monetization model (free vs ad-supported). Kopperfield's advantage is update cadence (every 3 weeks vs every 9 months) and device support (3 vs 1). On price, ratings volume, 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.

Overhead Install Guide holds the better App Store score, 4.6 against 3.9. Both are backed by a comparable volume of ratings — 5 and 9 respectively.

Overhead Install Guide ships an update every 9 months, Kopperfield every 3 weeks. The most recent releases landed on July 31, 2026 and August 21, 2026 respectively.

## The numbers

| Metric | Overhead Install Guide | Kopperfield |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (5 ratings)](https://appshunter.io/ios/app/overhead-install-guide/id1353512021/reviews)** | [3.9 (9 ratings)](https://appshunter.io/ios/app/kopperfield/id6736772332/reviews) |
| Number of ratings | 5 | **9** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 3 weeks** |
| Monetization | **Free** | Ad-supported |
| Size | 21 MB | 45 MB |
| Requires iOS | 16.6 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Southwire Company](https://appshunter.io/developer/440338423) | [Kopperfield, Inc.](https://appshunter.io/developer/1756157251) |

## 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


### Kopperfield

[App page](https://appshunter.io/ios/app/kopperfield/id6736772332)

Streamline electrical design and permitting with powerful tools for load calculations, panel schedules, and single-line diagrams. Quickly reference the National Electrical Code with an AI-powered chatbot and generate instant PDF reports for inspectors and clients.

**Highlights:** Load calculator with NEC standards, Single line diagram tool, Panel schedule creation, NEC chatbot, Instant PDF report generation, AI panel photo processing, Team dashboard

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

**In-app purchases:** none


## Frequently asked questions

### Is Overhead Install Guide free?

Overhead Install Guide is free to download, with no in-app purchases.

### Is Kopperfield free?

Kopperfield is free to download, with no in-app purchases.

### Which has better reviews, Overhead Install Guide or Kopperfield?

Overhead Install Guide is rated higher. Overhead Install Guide averages 4.6 out of 5 from 5 ratings, while Kopperfield averages 3.9 from 9 ratings.

### Do Overhead Install Guide or Kopperfield have ads?

Neither Overhead Install Guide nor Kopperfield shows ads.

### Which is updated more often, Overhead Install Guide or Kopperfield?

Overhead Install Guide ships an update every 9 months, and Kopperfield every 3 weeks. Most recently, Overhead Install Guide was updated on July 31, 2026 and Kopperfield on August 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.*