# Duct Calculator Elite vs Boxspan by Spantec

The clearest difference is price: Boxspan by Spantec at Free against Duct Calculator Elite's $9.99. On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Boxspan by Spantec is free to download; Duct Calculator Elite costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Duct Calculator Elite | Boxspan by Spantec |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | **[4.8 (234 ratings)](https://appshunter.io/ios/app/duct-calculator-elite/id665701601/reviews)** | — |
| Number of ratings | **234** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 15 months | — |
| Monetization | Paid | — |
| Size | 13 MB | 0 MB |
| Requires iOS | 15.6 | **14.5** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Cyberprodigy LLC](https://appshunter.io/developer/510284906) | [Spantec Systems PTY LTD](https://appshunter.io/developer/1610045891) |

## What reviewers say

### Duct Calculator Elite

[App page](https://appshunter.io/ios/app/duct-calculator-elite/id665701601)

This app simplifies HVAC duct sizing calculations. It computes duct size, velocity, pressure drop, and flow rate with an intuitive interface. Supports various units and duct materials for precise HVAC design.

**Highlights:** Calculate duct size, velocity, pressure drop, flow rate, Duct Size by Airflow mode, Duct Size by Dimension mode, Pressure Drop calculations, Customizable units and duct materials, Uses ASHRAE Handbook friction loss equations

**Features:** macOS Compatibility

**In-app purchases:** none


### Boxspan by Spantec

[App page](https://appshunter.io/ios/app/boxspan-by-spantec/id1610045889)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Duct Calculator Elite free?

Duct Calculator Elite costs $9.99, with no in-app purchases.

### Is Boxspan by Spantec free?

Boxspan by Spantec is free to download, with no in-app purchases.

### Do Duct Calculator Elite or Boxspan by Spantec have ads?

Neither Duct Calculator Elite nor Boxspan by Spantec shows ads.

---

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