





212+ iOS apps curated and reviewed
From beginner-friendly picks to power-user tools, our air duct calculator list covers 212+ iPhone apps updated through June 2026. Compare ratings, prices, and screenshots in one place.





















This convenient application allows HVAC engineers to easily determine the smallest recommended duct size for their installation, based on specific volume and friction loss. Simply select the product, friction loss, and volume, and the app will calculate the velocity and display the appropriate duct size for your application.


This mobile application allows users to easily calculate duct sizes and make necessary adjustments. Download it now to simplify your duct calculations and take control of your projects.


HVACR Check is a powerful tool for HVAC technicians that streamlines equipment checklists, service reports, and maintenance workflows. Simplify your work processes and stay organized with this all-in-one solution.




This mobile app is an HVAC "Easy Button" that provides access to product information, useful tools, and expert technical support, making it easier for professionals to work efficiently. With the app, users can view product information, search for equipment, verify warranty registrations, access technical support, and utilize various calculators and tools to streamline their work.


This application helps HVAC design professionals determine optimal duct sizes with precision, offering a list of suitable even-sized ducts at various aspect ratios. It features an intuitive interface for easy adjustments and calculations, making it a valuable tool for streamlining duct sizing tasks.


This application allows users to perform various duct calculations, including diameter conversions, ventilation parameter calculations, pressure drop calculations, and unit conversions, making it easy to design and optimize duct systems. Try it out to simplify your duct calculations and get accurate results quickly.


This ducting size calculator simplifies the job of duct sizing for HVAC professionals, allowing users to calculate duct size, velocity, pressure drop, and flow rate for ductwork with precision and ease. Download the app to streamline your duct sizing calculations and take advantage of customizable preference settings and accurate solver equations.


Calculate measurements with ease using this construction calculator designed for quick and accurate results. Perfect for all your project needs – download now and simplify your work!


This application allows users to easily calculate various humidity-related values, such as dew point temperature and relative humidity, by inputting just two of six supported items. Try it out and get accurate calculations for your psychrometric chart needs!


Experience a high precision calculator app that offers a user-friendly interface, supports multiple functionalities like undo, switching workspaces, Bluetooth keyboard compatibility, and more. Print and share your calculations with ease and precision for free!


Elevate your air purifier experience with an app designed for optimal performance and ease of use. Monitor indoor and outdoor air quality, schedule cleanings, track filter lifetimes, and more for peace of mind.


Optimize your welding performance with a smart calculator app that fine-tunes your machine settings for the best results. Enhance your welding experience with precise parameters and process information on TIG, Stick, or MIG welding techniques.


Calculator! is a versatile calculator app for iPad and iPhone with standard and scientific functions. Customize the look, take notes, view history, and perform complex calculations with ease. Perfect for math students and professionals.


This application provides a set of calculators for construction materials, including concrete and aggregate, to help users determine the exact amount needed for various projects, taking into account potential waste and irregularities. With individual calculators for different types of projects, such as slabs, footings, walls, and steps, users can get accurate estimates and recommended order amounts to ensure they have enough materials.