# Electrical Calc Pro vs Kopperfield

The clearest difference is review sentiment: Electrical Calc Pro at 60% against Kopperfield's 0%. Electrical Calc Pro also leads on rating (5.0 vs 3.9) and iOS requirement (8.0 vs 15.1). Kopperfield's advantage is price (Free vs $19.99) and ratings volume (9 vs 1). On update cadence, ads, in-app purchases and device support there is nothing between them.

Kopperfield is free to download; Electrical Calc Pro costs $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Electrical Calc Pro holds the better App Store score, 5.0 against 3.9. That said, the two scores are not equally well evidenced: Kopperfield has 9 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 60% of Electrical Calc Pro's written reviews are positive against 0% of Kopperfield's.

Electrical Calc Pro ships an update every 5 weeks, Kopperfield every 3 weeks. The most recent releases landed on October 5, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Electrical Calc Pro | Kopperfield |
| --- | --- | --- |
| Price | $19.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/electrical-calc-pro/id514793318/reviews)** | [3.9 (9 ratings)](https://appshunter.io/ios/app/kopperfield/id6736772332/reviews) |
| Number of ratings | 1 | **9** |
| Positive reviews | **60.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 3 weeks** |
| Monetization | Paid | **Ad-supported** |
| Size | 22 MB | 45 MB |
| Requires iOS | **8.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Snappy Appz Inc.](https://appshunter.io/developer/375591377) | [Kopperfield](https://appshunter.io/developer/1756157251) |

## What reviewers say

### Electrical Calc Pro

[App page](https://appshunter.io/ios/app/electrical-calc-pro/id514793318)

This professional electrical application calculates common electrical problems, including wire sizing, conduit sizing, and fusing based on the Canadian Electric Code. It offers advanced features for motor loads, transformers, feeders, and voltage drop calculations, making it an essential tool for electricians and engineers.

**Highlights:** Wire and conduit sizing, Motor and transformer load calculations, Voltage drop calculations, Panel legend creation and export, Allowable ampacity and derating, Box fill calculations

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

**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 Electrical Calc Pro free?

Electrical Calc Pro costs $19.99, with no in-app purchases.

### Is Kopperfield free?

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

### Which has better reviews, Electrical Calc Pro or Kopperfield?

Electrical Calc Pro is rated higher. Electrical Calc Pro averages 5.0 out of 5 from 1 ratings, while Kopperfield averages 3.9 from 9 ratings.

### Do Electrical Calc Pro or Kopperfield have ads?

Neither Electrical Calc Pro nor Kopperfield shows ads.

### Which is updated more often, Electrical Calc Pro or Kopperfield?

Electrical Calc Pro ships an update every 5 weeks, and Kopperfield every 3 weeks. Most recently, Electrical Calc Pro was updated on October 5, 2026 and Kopperfield on October 3, 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.*