# DuctChecker

> Duct sizing calculator for HVAC engineers using multiple pressure methods. (iPhone/iPad app by AIR DESIGN, INC..)

- Source: https://appshunter.io/ios/app/ductchecker/id933593987 (this page in markdown: same URL + `.md`)
- Developer: [AIR DESIGN, INC.](https://appshunter.io/developer/923430781)
- Category: Productivity, Business
- Price: $6.99
- Age rating: 4+
- Requires: iOS 15.0 · 23 MB
- Languages: American English
- Released: 2014-12-09
- Data updated: 2026-08-24
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/ductchecker/id933593987/reviews.md

## What is DuctChecker?

To determine the size of the duct constant pressure method, static pressure regain method, total pressure method, velocity method. Generally uses constant pressure method. This constant pressure method is how to determine the duct dimensions using the same value per 1 m on all duct friction loss. Usually determined by flow diagrams or duct design for slide rules. You can easily determine the duct by using this program.

## Key features

- Constant pressure method calculation
- Static pressure regain method
- Total pressure method
- Velocity method
- Duct dimension determination
- Simplified duct design

## Recent user reviews (10 of 12)

All indexed reviews: https://appshunter.io/ios/app/ductchecker/id933593987/reviews.md

### 1/5 — Not working

*2023-11-15, version 2.0.15*

Not working. Pls help…

### 1/5 — 開かない

*2023-01-20*

アプリが立ち上がりません。早急に対応を求めます。

### 1/5 — Conplain Ductchecker

*2023-01-12, version 2.0.11*

Not working, please back money !

### 1/5 — Not work

*2022-09-23, version 2.0.9*

Not working nay more, back money please

### 1/5 — 使えない

*2022-08-31*

使えない

### 1/5 — Not working

*2022-07-05, version 2.0.9*

Why it does not work on my iphone ???
You kidding me ???
I request a apologize for this issue !!!!

### 1/5 — Not working

*2022-07-01, version 2.0.9*

Not working on iphone 13. IOS 15

### 1/5 — Lừa đảo

*2022-04-14, version 2.0.7*

Mua xong về không sử dụng được

### 1/5 — Not working on iphone 12

*2022-02-12, version 2.0.7*

This app is not working on iphone 12, running iOS 15.3. 
Please fix or refund !

### 3/5 — Add L/s please

*2021-08-08, version 1.7.1*

please add units "L/s" for air flow not CMH. It is quite annoy if we have to convert from L/s to CMH to enter in this software

## Frequently asked questions about DuctChecker

### What is the price of DuctChecker?

DuctChecker is a paid application priced at $6.99. This one-time purchase grants you access to all its features for duct sizing calculations.

### Does DuctChecker have ads?

No, DuctChecker is ad-free. You can use the application without any interruptions from advertisements.

### What duct sizing methods does DuctChecker support?

DuctChecker supports the constant pressure method, static pressure regain method, total pressure method, and velocity method for determining duct dimensions.

### On which devices can I use DuctChecker?

DuctChecker is available for iPhone, iPad, and iPod. It is designed for iOS devices.

### How often is DuctChecker updated?

The latest version of DuctChecker is 2.5.46, last updated on January 15, 2026. Updates typically address improvements and new features.

### What is the age rating for DuctChecker?

DuctChecker has an age rating of 4+, making it suitable for a wide range of users.

### Can DuctChecker integrate with other design software?

The provided information does not specify integration capabilities with other design software. Its primary function is direct calculation of duct dimensions.

### What are the benefits of using the constant pressure method in DuctChecker?

The constant pressure method, which DuctChecker generally uses, determines duct dimensions by maintaining the same friction loss per meter across all sections, simplifying design.

## Version history (last 5 of 5)

### 2.5.47 — 2026-05-08

Minor bugs fixed and app performance improved.

### 2.5.46 — 2026-01-15

Minor bugs fixed and app performance improved.

### 2.5.44 — 2025-12-14

Minor bugs fixed and app performance improved.

### 2.5.43 — 2025-09-28

Minor bugs fixed and app performance improved.

### 2.5.42 — 2025-07-11

Minor bugs fixed and app performance improved.

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## More apps by AIR DESIGN, INC.

- [AirCalc_](https://appshunter.io/ios/app/aircalc/id923430782)
- [PipeChecker](https://appshunter.io/ios/app/pipechecker/id1632174229)

All apps by AIR DESIGN, INC.: https://appshunter.io/developer/923430781

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-24.*