# Kopperfield vs Electrical Load Calc NEC

The clearest difference is price: Kopperfield at Free against Electrical Load Calc NEC's $0.99. Kopperfield also leads on rating (3.9 vs 3.0) and in-app purchases (none vs 1). Electrical Load Calc NEC's advantage is update cadence (every 3 days vs every 3 weeks) and chart position (#179 vs unranked). On ratings volume, ads and device support there is nothing between them.

Kopperfield is free to download; Electrical Load Calc NEC costs $0.99 up front. Electrical Load Calc NEC sells 1 one-off in-app purchase. Kopperfield asks for nothing beyond the download.

Kopperfield holds the better App Store score, 3.9 against 3.0. Both are backed by a comparable volume of ratings — 9 and 4 respectively.

Kopperfield ships an update every 3 weeks, Electrical Load Calc NEC every 3 days. The most recent releases landed on October 3, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Kopperfield | Electrical Load Calc NEC |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[3.9 (9 ratings)](https://appshunter.io/ios/app/kopperfield/id6736772332/reviews)** | [3.0 (4 ratings)](https://appshunter.io/ios/app/electrical-load-calc-nec/id6763250945/reviews) |
| Number of ratings | **9** | 4 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 3 days** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Best chart rank | — | **#179** |
| Size | 45 MB | 34 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Kopperfield](https://appshunter.io/developer/1756157251) | [Rizvan Adzhoian](https://appshunter.io/developer/1891746079) |

## What reviewers say

### 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


### Electrical Load Calc NEC

[App page](https://appshunter.io/ios/app/electrical-load-calc-nec/id6763250945)

**Currently charting:** #179 Top Paid · Utilities (US App Store)

Calculate residential electrical service sizes accurately using NEC standards. This tool provides step-by-step breakdowns, references official articles, and supports multiple NEC editions for electricians and engineers.

**Highlights:** NEC 220.82 Optional Method calculations, Support for NEC 2023 and NEC 2026, Step-by-step breakdown with article references, Appliance presets and custom entry, Service size recommendations, PASS/FAIL check against panel capacity

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Unlock | $2.99 | one-time |


## Frequently asked questions

### Is Kopperfield free?

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

### Is Electrical Load Calc NEC free?

Electrical Load Calc NEC costs $0.99, and also offers in-app purchases.

### Which has better reviews, Kopperfield or Electrical Load Calc NEC?

Kopperfield is rated higher. Kopperfield averages 3.9 out of 5 from 9 ratings, while Electrical Load Calc NEC averages 3.0 from 4 ratings.

### Do Kopperfield or Electrical Load Calc NEC have ads?

Neither Kopperfield nor Electrical Load Calc NEC shows ads.

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

Kopperfield ships an update every 3 weeks, and Electrical Load Calc NEC every 3 days. Most recently, Kopperfield was updated on October 3, 2026 and Electrical Load Calc NEC on October 9, 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.*