# Cerrowire Calculators vs Kopperfield

The clearest difference is review sentiment: Cerrowire Calculators at 100% against Kopperfield's 0%. Cerrowire Calculators also leads on rating (5.0 vs 3.8) and monetization model (free vs ad-supported). Kopperfield's advantage is update cadence (fortnightly vs every 3 months). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Cerrowire Calculators holds the better App Store score, 5.0 against 3.8. Both are backed by a comparable volume of ratings — 5 and 11 respectively. Written reviews point the same way: 100% of Cerrowire Calculators's written reviews are positive against 0% of Kopperfield's.

Cerrowire Calculators ships an update every 3 months, Kopperfield fortnightly. The most recent releases landed on October 10, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Cerrowire Calculators | Kopperfield |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/cerrowire-calculators/id1440292951/reviews)** | [3.8 (11 ratings)](https://appshunter.io/ios/app/kopperfield/id6736772332/reviews) |
| Number of ratings | 5 | **11** |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Fortnightly** |
| Monetization | **Free** | Ad-supported |
| Size | 32 MB | 64 MB |
| Requires iOS | **8.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Cerro Wire LLC](https://appshunter.io/developer/546010607) | [Kopperfield](https://appshunter.io/developer/1756157251) |

## What reviewers say

### Cerrowire Calculators

[App page](https://appshunter.io/ios/app/cerrowire-calculators/id1440292951)

Calculate conduit fill and size based on NEC guidelines for copper and aluminum building wire. Determine the maximum number of conductors for a given raceway or the required raceway size for specific conductors.

**Highlights:** NEC conduit fill calculations, Conduit sizing for conductors, Supports copper and aluminum wire, Calculates for various raceway types (EMT, PVC, RMC), Based on National Electrical Code®

**Features:** macOS Compatibility

**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 Cerrowire Calculators free?

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

### Is Kopperfield free?

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

### Which has better reviews, Cerrowire Calculators or Kopperfield?

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

### Do Cerrowire Calculators or Kopperfield have ads?

Neither Cerrowire Calculators nor Kopperfield shows ads.

### Which is updated more often, Cerrowire Calculators or Kopperfield?

Cerrowire Calculators ships an update every 3 months, and Kopperfield fortnightly. Most recently, Cerrowire Calculators was updated on October 10, 2026 and Kopperfield on October 25, 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.*