# AI Ductulator vs Digiduct

The clearest difference is price: Digiduct at Free against AI Ductulator's $3.99. Digiduct also leads on rating (4.6 vs 3.9) and update cadence (every 2 months vs every 52 months). AI Ductulator's advantage is chart position (#139 vs unranked) and iOS requirement (13.0 vs 26.2). On ratings volume, ads, in-app purchases and device support there is nothing between them.

Digiduct is free to download; AI Ductulator costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Digiduct holds the better App Store score, 4.6 against 3.9. Both are backed by a comparable volume of ratings — 9 and 11 respectively.

AI Ductulator ships an update every 52 months, Digiduct every 2 months. The most recent releases landed on October 13, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | AI Ductulator | Digiduct |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | [3.9 (9 ratings)](https://appshunter.io/ios/app/ai-ductulator/id986252467/reviews) | **[4.6 (11 ratings)](https://appshunter.io/ios/app/digiduct/id6738926359/reviews)** |
| Number of ratings | 9 | **11** |
| Positive reviews | 42.9% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 52 months | **Every 2 months** |
| Monetization | Paid | **Ad-supported** |
| Best chart rank | **#139** | — |
| Size | 89 MB | 4 MB |
| Requires iOS | **13.0** | 26.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [pasquale dipaola](https://appshunter.io/developer/986252466) | [Syska Hennessy Group](https://appshunter.io/developer/1782943081) |

## What reviewers say

### AI Ductulator

[App page](https://appshunter.io/ios/app/ai-ductulator/id986252467)

**Currently charting:** #139 Top Paid · Utilities (US App Store)

This application serves as a duct sizing calculator for HVAC professionals and enthusiasts. It provides quick and accurate calculations for duct dimensions based on various parameters.

**Highlights:** Duct sizing calculations, HVAC parameter input, Accurate dimension results, User-friendly interface

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

**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 AI Ductulator free?

AI Ductulator costs $3.99, with no in-app purchases.

### Is Digiduct free?

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

### Which has better reviews, AI Ductulator or Digiduct?

Digiduct is rated higher. AI Ductulator averages 3.9 out of 5 from 9 ratings, while Digiduct averages 4.6 from 11 ratings.

### Do AI Ductulator or Digiduct have ads?

Neither AI Ductulator nor Digiduct shows ads.

### Which is updated more often, AI Ductulator or Digiduct?

AI Ductulator ships an update every 52 months, and Digiduct every 2 months. Most recently, AI Ductulator was updated on October 13, 2026 and Digiduct on October 1, 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.*