# Building Wire Selector vs Propane King

The clearest difference is iOS requirement: Propane King at 12.2 against Building Wire Selector's 16.6. On price, update cadence, 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.

Building Wire Selector ships an update every 2 months, Propane King every 4 months. The most recent releases landed on October 24, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Building Wire Selector | Propane King |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/building-wire-selector/id6670218338/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 4 months |
| Monetization | Free | — |
| Size | 6 MB | 56 MB |
| Requires iOS | 16.6 | **12.2** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Southwire Company](https://appshunter.io/developer/440338423) | [Rural Computer Consultants, Inc.](https://appshunter.io/developer/640795441) |

## What reviewers say

### 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


### Propane King

[App page](https://appshunter.io/ios/app/propane-king/id6752503065)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Building Wire Selector free?

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

### Is Propane King free?

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

### Do Building Wire Selector or Propane King have ads?

Neither Building Wire Selector nor Propane King shows ads.

### Which is updated more often, Building Wire Selector or Propane King?

Building Wire Selector ships an update every 2 months, and Propane King every 4 months. Most recently, Building Wire Selector was updated on October 24, 2026 and Propane King on October 14, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*