# AI Ductulator vs Ruud

The clearest difference is price: Ruud at Free against AI Ductulator's $3.99. Ruud also leads on rating (4.6 vs 3.9) and update cadence (monthly vs every 52 months). AI Ductulator's advantage is chart position (#173 vs unranked) and device support (3 vs 1). On review sentiment, ads and in-app purchases there is nothing between them.

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

Ruud holds the better App Store score, 4.6 against 3.9. That said, the two scores are not equally well evidenced: Ruud has 1.1K ratings behind it against 9, so its average is the more settled of the two. Written reviews point the same way: 43% of AI Ductulator's written reviews are positive against 50% of Ruud's.

AI Ductulator ships an update every 52 months, Ruud monthly. The most recent releases landed on October 13, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | AI Ductulator | Ruud |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | [3.9 (9 ratings)](https://appshunter.io/ios/app/ai-ductulator/id986252467/reviews) | **[4.6 (1.1K ratings)](https://appshunter.io/ios/app/ruud/id1608918835/reviews)** |
| Number of ratings | 9 | **1.1K** |
| Positive reviews | 42.9% of reviews | **50.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 52 months | **Monthly** |
| Monetization | Paid | **Free** |
| Best chart rank | **#173** | — |
| Size | 89 MB | 112 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [pasquale dipaola](https://appshunter.io/developer/986252466) | [Rheem Manufacturing Company](https://appshunter.io/developer/853793269) |

## What reviewers say

### AI Ductulator

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

**Currently charting:** #173 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


### Ruud

[App page](https://appshunter.io/ios/app/ruud/id1608918835)

This app streamlines HVAC installation, service, and support for contractors. It offers Bluetooth connectivity for system setup and troubleshooting, along with access to product information, warranty tracking, and dealer locators.

**Highlights:** Bluetooth setup and troubleshooting, System operating parameter monitoring, Alarm diagnosis and history, Access installation instructions and manuals, Track warranty information, Locate retailers and distributors, Find rebate and financing information

**Features:** 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 Ruud free?

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

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

Ruud is rated higher. AI Ductulator averages 3.9 out of 5 from 9 ratings, while Ruud averages 4.6 from 1.1K ratings.

### Do AI Ductulator or Ruud have ads?

Neither AI Ductulator nor Ruud shows ads.

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

AI Ductulator ships an update every 52 months, and Ruud monthly. Most recently, AI Ductulator was updated on October 13, 2026 and Ruud on October 18, 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.*