# ElectriCalc Pro vs Kopperfield

The clearest difference is review sentiment: ElectriCalc Pro at 78% against Kopperfield's 0%. ElectriCalc Pro also leads on rating (4.9 vs 3.9) and ratings volume (354 vs 9). Kopperfield's advantage is in-app purchases (none vs 2) and update cadence (every 3 weeks vs every 10 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. ElectriCalc Pro sells 2 in-app purchases, starting at $4.99 per month. Kopperfield asks for nothing beyond the download.

ElectriCalc Pro holds the better App Store score, 4.9 against 3.9. That said, the two scores are not equally well evidenced: ElectriCalc Pro has 354 ratings behind it against 9, so its average is the more settled of the two. Written reviews point the same way: 78% of ElectriCalc Pro's written reviews are positive against 0% of Kopperfield's.

ElectriCalc Pro ships an update every 10 months, Kopperfield every 3 weeks. The most recent releases landed on September 19, 2026 and August 21, 2026 respectively.

## The numbers

| Metric | ElectriCalc Pro | Kopperfield |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (354 ratings)](https://appshunter.io/ios/app/electricalc-pro/id569677304/reviews)** | [3.9 (9 ratings)](https://appshunter.io/ios/app/kopperfield/id6736772332/reviews) |
| Number of ratings | **354** | 9 |
| Positive reviews | **78.1% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 29 MB | 45 MB |
| Requires iOS | **14.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Calculated Industries](https://appshunter.io/developer/370406449) | [Kopperfield, Inc.](https://appshunter.io/developer/1756157251) |

## What reviewers say

### ElectriCalc Pro

[App page](https://appshunter.io/ios/app/electricalc-pro/id569677304)

This app provides electricians and electrical professionals with a powerful tool for performing complex calculations based on the latest National Electrical Code (NEC). It offers solutions for wire sizing, voltage drop, conduit sizing, and motor calculations, saving time and ensuring code compliance.

**Highlights:** NEC compliant calculations, Wire and conduit sizing, Voltage drop calculations, Motor full-load amps, Ohm's Law solver, Built-in help and tutorials

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month Full Access | $4.99 | per month |
| 1 Year Full Access | $39.99 | per year |


### 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 ElectriCalc Pro free?

ElectriCalc Pro 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, ElectriCalc Pro or Kopperfield?

ElectriCalc Pro is rated higher. ElectriCalc Pro averages 4.9 out of 5 from 354 ratings, while Kopperfield averages 3.9 from 9 ratings.

### Do ElectriCalc Pro or Kopperfield have ads?

Neither ElectriCalc Pro nor Kopperfield shows ads.

### Which is updated more often, ElectriCalc Pro or Kopperfield?

ElectriCalc Pro ships an update every 10 months, and Kopperfield every 3 weeks. Most recently, ElectriCalc Pro was updated on September 19, 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.*