# Kopperfield vs ConduitLab

The clearest difference is review sentiment: ConduitLab at 100% against Kopperfield's 0%. ConduitLab also leads on rating (5.0 vs 3.8). Kopperfield's advantage is in-app purchases (none vs 3) and update cadence (every 10 days vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. ConduitLab sells 3 in-app purchases, starting at $1.99 per 7 days. Kopperfield asks for nothing beyond the download.

ConduitLab holds the better App Store score, 5.0 against 3.8. Both are backed by a comparable volume of ratings — 11 and 3 respectively. Written reviews point the same way: 0% of Kopperfield's written reviews are positive against 100% of ConduitLab's.

Kopperfield ships an update every 10 days, ConduitLab every 2 months. The most recent releases landed on October 30, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Kopperfield | ConduitLab |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.8 (11 ratings)](https://appshunter.io/ios/app/kopperfield/id6736772332/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/conduitlab-nec-calculator/id6757708241/reviews)** |
| Number of ratings | **11** | 3 |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 2 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 64 MB | 58 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kopperfield](https://appshunter.io/developer/1756157251) | [Teleios AI, LLC](https://appshunter.io/developer/1868405452) |

## What reviewers say

### Kopperfield

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

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

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

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

**In-app purchases:** none


### ConduitLab

[App page](https://appshunter.io/ios/app/conduitlab-nec-calculator/id6757708241)

This app provides professional NEC electrical calculations for electricians and engineers. It features ampacity, voltage drop, and conduit fill calculations, with a unique 2D visualizer to see conductor layouts. Generate inspector-ready PDF reports for documentation and record-keeping.

**Highlights:** Ampacity calculations with derating, Voltage drop calculations, 2D conduit fill visualizer, X-Ray conduit mode, Inspector-ready PDF reports, Offline-first calculations

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ConduitLab Pro (Weekly) | $1.99 | per 7 days |
| ConduitLab Pro (Monthly) | $4.99 | per month |
| ConduitLab Pro (Yearly) | $34.99 | per year |


## Frequently asked questions

### Is Kopperfield free?

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

### Is ConduitLab free?

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

### Which has better reviews, Kopperfield or ConduitLab?

ConduitLab is rated higher. Kopperfield averages 3.8 out of 5 from 11 ratings, while ConduitLab averages 5.0 from 3 ratings.

### Do Kopperfield or ConduitLab have ads?

Neither Kopperfield nor ConduitLab shows ads.

### Which is updated more often, Kopperfield or ConduitLab?

Kopperfield ships an update every 10 days, and ConduitLab every 2 months. Most recently, Kopperfield was updated on October 30, 2026 and ConduitLab on October 15, 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.*