# DuctSizer vs Pipe Sizer

The clearest difference is price: Pipe Sizer at $2.99 against DuctSizer's $4.99. DuctSizer's advantage is device support (3 vs 1) and iOS requirement (12.0 vs 16.4). On update cadence, ads and in-app purchases there is nothing between them.

DuctSizer costs $4.99 and Pipe Sizer $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

DuctSizer ships an update every 4 days, Pipe Sizer every 5 days. The most recent releases landed on November 3, 2026 and November 1, 2026 respectively.

## The numbers

| Metric | DuctSizer | Pipe Sizer |
| --- | --- | --- |
| Price | $4.99 | **$2.99** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 5 days |
| Monetization | Paid | — |
| Size | 57 MB | 29 MB |
| Requires iOS | **12.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Mulberrysoft](https://appshunter.io/developer/1612779919) | [ezyHVAC Co., Ltd.](https://appshunter.io/developer/6825391229) |

## What reviewers say

### DuctSizer

[App page](https://appshunter.io/ios/app/ductsizer/id6467117263)

This utility app provides a quick and accurate ductulator for calculating equivalent round and rectangular duct sizes. It supports both Imperial and SI units, offering a simple finger-slide interface for fast computations.

**Highlights:** Quick duct size calculations, Accurate results, Equivalent round and rectangular sizes, IP and SI unit support, Finger slide interface

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

**In-app purchases:** none


### Pipe Sizer

[App page](https://appshunter.io/ios/app/pipe-sizer-pipe-sizing-chart/id6825391227)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is DuctSizer free?

DuctSizer costs $4.99, with no in-app purchases.

### Is Pipe Sizer free?

Pipe Sizer costs $2.99, with no in-app purchases.

### Do DuctSizer or Pipe Sizer have ads?

Neither DuctSizer nor Pipe Sizer shows ads.

### Which is updated more often, DuctSizer or Pipe Sizer?

DuctSizer ships an update every 4 days, and Pipe Sizer every 5 days. Most recently, DuctSizer was updated on November 3, 2026 and Pipe Sizer on November 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.*