# Digiduct vs DuctPro

The clearest difference is update cadence: DuctPro at weekly against Digiduct's every 2 months. DuctPro also leads on iOS requirement (17.0 vs 26.2). On price, ads, in-app purchases and device support there is nothing between them.

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

Digiduct ships an update every 2 months, DuctPro weekly. The most recent releases landed on October 1, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Digiduct | DuctPro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (11 ratings)](https://appshunter.io/ios/app/digiduct/id6738926359/reviews)** | — |
| Number of ratings | **11** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | Ad-supported | — |
| Size | 4 MB | 3 MB |
| Requires iOS | 26.2 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Syska Hennessy Group](https://appshunter.io/developer/1782943081) | [High Intent Labs](https://appshunter.io/developer/6771761657) |

## What reviewers say

### 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


### DuctPro

[App page](https://appshunter.io/ios/app/ductpro/id6771761655)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Digiduct free?

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

### Is DuctPro free?

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

### Do Digiduct or DuctPro have ads?

Neither Digiduct nor DuctPro shows ads.

### Which is updated more often, Digiduct or DuctPro?

Digiduct ships an update every 2 months, and DuctPro weekly. Most recently, Digiduct was updated on October 1, 2026 and DuctPro on September 19, 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.*