# Cerrowire Calculators vs Building Wire Selector

The clearest difference is iOS requirement: Cerrowire Calculators at 8.0 against Building Wire Selector's 16.6. On price, rating, review sentiment and ratings volume there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for Cerrowire Calculators against 5.0 for Building Wire Selector. Both are backed by a comparable volume of ratings — 5 and 2 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Cerrowire Calculators ships an update every 3 months, Building Wire Selector every 2 months. The most recent releases landed on November 2, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Cerrowire Calculators | Building Wire Selector |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (5 ratings)](https://appshunter.io/ios/app/cerrowire-calculators/id1440292951/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/building-wire-selector/id6670218338/reviews) |
| Number of ratings | **5** | 2 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 32 MB | 6 MB |
| Requires iOS | **8.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Cerro Wire LLC](https://appshunter.io/developer/546010607) | [Southwire Company](https://appshunter.io/developer/440338423) |

## 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


### Building Wire Selector

[App page](https://appshunter.io/ios/app/building-wire-selector/id6670218338)

This tool helps determine the correct conductor size and wire type for electrical installations. It adheres to the National Electrical Code® wiring methods, ensuring compliance and safety.

**Highlights:** Conductor size determination, Wire and cable type selection, National Electrical Code compliance, Electrical installation guidance

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Cerrowire Calculators free?

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

### Is Building Wire Selector free?

Building Wire Selector is free to download, with no in-app purchases.

### Which has better reviews, Cerrowire Calculators or Building Wire Selector?

Cerrowire Calculators and Building Wire Selector are both rated 5.0 out of 5 on the App Store, from 5 and 2 ratings respectively.

### Do Cerrowire Calculators or Building Wire Selector have ads?

Neither Cerrowire Calculators nor Building Wire Selector shows ads.

### Which is updated more often, Cerrowire Calculators or Building Wire Selector?

Cerrowire Calculators ships an update every 3 months, and Building Wire Selector every 2 months. Most recently, Cerrowire Calculators was updated on November 2, 2026 and Building Wire Selector on October 30, 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.*