Old man
Very Handy App. Thanks for the update!!!!
Airflow Calcs
For me...great product. Needed cubic metres per minute to litres per second & the developer was only too happy to oblige. You can't ask for more....

Archived App (Last seen on 17 Sep 2025)
This is an archived listing of the app previously available on the App Store.This utility app provides essential calculators for plumbing and HVAC professionals, assisting with airflow calculations, unit conversions, and basic HVAC needs. It's designed for reference, education, and small projects, offering offline functionality and email sharing of results.
8.4
May 8, 2022
updates for latest iOS
Plumbing, Airflow HVAC Calcs offers calculators for virtual airflow, Reynolds number, weights, and various area, distance, and volume conversions. It's useful for reference, educational purposes, and small projects in plumbing and HVAC.
No, Plumbing, Airflow HVAC Calcs does not require network connectivity. All features and calculations can be performed offline, making it convenient for use in any location.
Yes, you can email your calculations or conversion results directly through the iPhone's email application. The app provides an automatically filled-in email template for ease of use.
Plumbing, Airflow HVAC Calcs is a Universal App, meaning it is compatible with iPhone, iPod Touch, and iPad devices. It also features Retina Display graphics for enhanced visuals.
The app was last updated on May 8, 2022, to version 8.4. While specific update frequency isn't detailed, this indicates ongoing maintenance and improvements.
Plumbing, Airflow HVAC Calcs is a paid application, priced at $0.99. This one-time purchase grants access to all its features.
Plumbing, Airflow HVAC Calcs has an age rating of 4+. This suggests it is suitable for a wide range of users, including younger individuals interested in technical calculations.
No, Plumbing, Airflow HVAC Calcs does not contain advertisements. As a paid application, it offers an ad-free experience for its users.