# Ductulator vs Revizto Site

The clearest difference is review sentiment: Revizto Site at 67% against Ductulator's 0%. Revizto Site also leads on rating (4.7 vs 1.0) and ratings volume (9 vs 2). Ductulator's advantage is update cadence (weekly vs every 2 months) and monetization model (free vs free with in-app purchases). 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.

Revizto Site holds the better App Store score, 4.7 against 1.0. Both are backed by a comparable volume of ratings — 2 and 9 respectively. Written reviews point the same way: 0% of Ductulator's written reviews are positive against 67% of Revizto Site's.

Ductulator ships an update weekly, Revizto Site every 2 months. The most recent releases landed on October 12, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Ductulator | Revizto Site |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (2 ratings)](https://appshunter.io/ios/app/ductulator/id1528030964/reviews) | **[4.7 (9 ratings)](https://appshunter.io/ios/app/revizto-site/id1673448001/reviews)** |
| Number of ratings | 2 | **9** |
| Positive reviews | 0.0% of reviews | **66.7% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 2 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 14 MB | 371 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Simon Leroux](https://appshunter.io/developer/1513421859) | [3DreamTeam Inc.](https://appshunter.io/developer/492197726) |

## What reviewers say

### Ductulator

[App page](https://appshunter.io/ios/app/ductulator/id1528030964)

This app provides a simple and efficient tool for calculating the dimensions of square ventilation ducts. It's designed for engineers, architects, and contractors to generate data for mechanical ventilation, cooling, and HVAC projects. Quickly validate residential and commercial solutions with this easy-to-use calculator.

**Highlights:** Calculate equivalent round diameter of square ducts, Convert square duct dimensions by volume ratio, Provide metric equivalence, Validate residential and commercial solutions, Designed for engineers and architects

**Features:** macOS Compatibility

**In-app purchases:** none


### Revizto Site

[App page](https://appshunter.io/ios/app/revizto-site/id1673448001)

Access and manage construction projects from anywhere with this app. Collaborate with teams, view models in 2D/3D, and track issues offline. Designed for the AECO industry, it streamlines project management for field and office use.

**Highlights:** Offline project access, 3D and 2D project exploration, Issue tracking and management, Augmented reality (AR) model comparison, View and edit object properties, QR code scanning for quick access

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Ductulator free?

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

### Is Revizto Site free?

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

### Which has better reviews, Ductulator or Revizto Site?

Revizto Site is rated higher. Ductulator averages 1.0 out of 5 from 2 ratings, while Revizto Site averages 4.7 from 9 ratings.

### Do Ductulator or Revizto Site have ads?

Neither Ductulator nor Revizto Site shows ads.

### Which is updated more often, Ductulator or Revizto Site?

Ductulator ships an update weekly, and Revizto Site every 2 months. Most recently, Ductulator was updated on October 12, 2026 and Revizto Site on October 24, 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.*