# PipeSizer vs Easy Duct

The clearest difference is update cadence: Easy Duct at every 2 days against PipeSizer's every 6 weeks. 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.

PipeSizer ships an update every 6 weeks, Easy Duct every 2 days. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | PipeSizer | Easy Duct |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/easy-duct/id6810881020/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 2 days** |
| Monetization | — | Free |
| Size | 46 MB | 3 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Mario Cerda](https://appshunter.io/developer/6772352482) | [Iman Alizadeh](https://appshunter.io/developer/6810881022) |

## What reviewers say

### PipeSizer

[App page](https://appshunter.io/ios/app/pipesizer-diameter-selector/id6781534043)

**In-app purchases:** none


### Easy Duct

[App page](https://appshunter.io/ios/app/easy-duct/id6810881020)

This app calculates air duct sizes for HVAC design. It solves for missing values like airflow or head loss, allowing users to set multiple limits simultaneously. Results are presented with buildable size steps and detailed engineering data, functioning fully offline.

**Highlights:** Airflow, head loss, velocity, or duct size calculation, Simultaneous head loss and velocity limit checking, Buildable size steps for fabrication, Offline functionality, IP and SI unit conversion, Multiple friction models and engineering data

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is PipeSizer free?

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

### Is Easy Duct free?

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

### Do PipeSizer or Easy Duct have ads?

Neither PipeSizer nor Easy Duct shows ads.

### Which is updated more often, PipeSizer or Easy Duct?

PipeSizer ships an update every 6 weeks, and Easy Duct every 2 days. Most recently, PipeSizer was updated on October 25, 2026 and Easy Duct 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.*