# Breaker Box vs Kopperfield

The clearest difference is review sentiment: Breaker Box at 78% against Kopperfield's 0%. Breaker Box also leads on rating (4.4 vs 3.9) and ratings volume (99 vs 9). Kopperfield's advantage is in-app purchases (none vs 1). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Breaker Box sells 1 one-off in-app purchase. Kopperfield asks for nothing beyond the download.

Breaker Box holds the better App Store score, 4.4 against 3.9. That said, the two scores are not equally well evidenced: Breaker Box has 99 ratings behind it against 9, so its average is the more settled of the two. Written reviews point the same way: 78% of Breaker Box's written reviews are positive against 0% of Kopperfield's.

Breaker Box ships an update every 2 weeks, Kopperfield every 3 weeks. The most recent releases landed on September 17, 2026 and August 21, 2026 respectively.

## The numbers

| Metric | Breaker Box | Kopperfield |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (99 ratings)](https://appshunter.io/ios/app/breaker-box-panel-directory/id1459288663/reviews)** | [3.9 (9 ratings)](https://appshunter.io/ios/app/kopperfield/id6736772332/reviews) |
| Number of ratings | **99** | 9 |
| Positive reviews | **77.8% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 113 MB | 45 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Brett Pappas](https://appshunter.io/developer/1435218098) | [Kopperfield, Inc.](https://appshunter.io/developer/1756157251) |

## What reviewers say

### Breaker Box

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

Easily create custom electrical panel legends. Label phases with colors, tandem breakers, and 3-pole breakers. Print legends in exact sizes for sleeves or door taping.

**Highlights:** Create custom panel legends, Label phases with color, Support for tandem breakers, Support for 3-pole breakers, Print legends in exact sizes, Print for sleeves or door taping

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

**In-app purchases (1)**

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


### 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 Breaker Box free?

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

### Is Kopperfield free?

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

### Which has better reviews, Breaker Box or Kopperfield?

Breaker Box is rated higher. Breaker Box averages 4.4 out of 5 from 99 ratings, while Kopperfield averages 3.9 from 9 ratings.

### Do Breaker Box or Kopperfield have ads?

Neither Breaker Box nor Kopperfield shows ads.

### Which is updated more often, Breaker Box or Kopperfield?

Breaker Box ships an update every 2 weeks, and Kopperfield every 3 weeks. Most recently, Breaker Box was updated on September 17, 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.*