# Duct Calculator Elite vs Digiduct

The clearest difference is price: Digiduct at Free against Duct Calculator Elite's $9.99. Digiduct also leads on update cadence (every 2 months vs every 15 months). Duct Calculator Elite's advantage is ratings volume (234 vs 11) and iOS requirement (15.6 vs 26.2). On rating, ads, in-app purchases and device support there is nothing between them.

Digiduct 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.

On the App Store both sit at effectively the same score — 4.8 for Duct Calculator Elite against 4.6 for Digiduct. That said, the two scores are not equally well evidenced: Duct Calculator Elite has 234 ratings behind it against 11, so its average is the more settled of the two.

Duct Calculator Elite ships an update every 15 months, Digiduct every 2 months. The most recent releases landed on November 6, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Duct Calculator Elite | Digiduct |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | **[4.8 (234 ratings)](https://appshunter.io/ios/app/duct-calculator-elite/id665701601/reviews)** | [4.6 (11 ratings)](https://appshunter.io/ios/app/digiduct/id6738926359/reviews) |
| Number of ratings | **234** | 11 |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 15 months | **Every 2 months** |
| Monetization | Paid | **Ad-supported** |
| Size | 13 MB | 4 MB |
| Requires iOS | **15.6** | 26.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Cyberprodigy LLC](https://appshunter.io/developer/510284906) | [Syska Hennessy Group](https://appshunter.io/developer/1782943081) |

## 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


### Digiduct

[App page](https://appshunter.io/ios/app/digiduct/id6738926359)

This HVAC tool assists professionals with duct sizing calculations based on ASHRAE standards. It supports multiple duct shapes and offers intelligent features to ensure accurate and reliable designs for real-world scenarios.

**Highlights:** Duct sizing for rectangular, round, and flat oval ducts, Customizable dimensions with locked values, Duct location intelligence for context-aware sizing, Calculations based on CFM, pressure drop, or velocity, Alerts for exceeding pressure drop or velocity limits

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

**In-app purchases:** none


## Frequently asked questions

### Is Duct Calculator Elite free?

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

### Is Digiduct free?

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

### Which has better reviews, Duct Calculator Elite or Digiduct?

Duct Calculator Elite is rated higher. Duct Calculator Elite averages 4.8 out of 5 from 234 ratings, while Digiduct averages 4.6 from 11 ratings.

### Do Duct Calculator Elite or Digiduct have ads?

Neither Duct Calculator Elite nor Digiduct shows ads.

### Which is updated more often, Duct Calculator Elite or Digiduct?

Duct Calculator Elite ships an update every 15 months, and Digiduct every 2 months. Most recently, Duct Calculator Elite was updated on November 6, 2026 and Digiduct on November 4, 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.*