# Caleffi Pipe Sizer vs Ductulator

The clearest difference is review sentiment: Caleffi Pipe Sizer at 50% against Ductulator's 0%. Caleffi Pipe Sizer also leads on rating (5.0 vs 1.0). Ductulator's advantage is update cadence (weekly vs every 7 months). On price, ratings volume, ads and in-app purchases there is nothing between them.

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

Caleffi Pipe Sizer holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 2 respectively. Written reviews point the same way: 50% of Caleffi Pipe Sizer's written reviews are positive against 0% of Ductulator's.

Caleffi Pipe Sizer ships an update every 7 months, Ductulator weekly. The most recent releases landed on October 18, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Caleffi Pipe Sizer | Ductulator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/caleffi-pipe-sizer/id1088928458/reviews)** | [1.0 (2 ratings)](https://appshunter.io/ios/app/ductulator/id1528030964/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | **50.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Weekly** |
| Monetization | Free | Free |
| Size | 44 MB | 14 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Caleffi S.p.A](https://appshunter.io/developer/920722440) | [Simon Leroux](https://appshunter.io/developer/1513421859) |

## What reviewers say

### Caleffi Pipe Sizer

[App page](https://appshunter.io/ios/app/caleffi-pipe-sizer/id1088928458)

This application assists hydraulic and HVAC professionals in accurately sizing water or air pipes. It calculates pressure drops and offers a modern, intuitive interface for precise system design on the go.

**Highlights:** Accurate water/air pipe sizing, Pressure drop calculation, Customizable technical parameter calculations, Extensive material and configuration library, Modern and intuitive interface, Enhanced performance

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Caleffi Pipe Sizer free?

Caleffi Pipe Sizer is free to download, with no in-app purchases.

### Is Ductulator free?

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

### Which has better reviews, Caleffi Pipe Sizer or Ductulator?

Caleffi Pipe Sizer is rated higher. Caleffi Pipe Sizer averages 5.0 out of 5 from 1 ratings, while Ductulator averages 1.0 from 2 ratings.

### Do Caleffi Pipe Sizer or Ductulator have ads?

Neither Caleffi Pipe Sizer nor Ductulator shows ads.

### Which is updated more often, Caleffi Pipe Sizer or Ductulator?

Caleffi Pipe Sizer ships an update every 7 months, and Ductulator weekly. Most recently, Caleffi Pipe Sizer was updated on October 18, 2026 and Ductulator on October 12, 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.*