Every iPhone needs a few good ductulator apps. We benchmark 92+ of them on App Store rating, freshness, and pricing, then surface the standouts so you don't have to scroll the App Store yourself.
This app provides professional HVAC duct sizing and psychrometric calculations in a single tool. It offers detailed calculations for various duct types and materials, along with comprehensive humid air property analysis. Designed for HVAC professionals, it replaces traditional ductulators with accurate digital functionality.
Instantly calculate HVAC duct sizes based on airflow, friction rate, or velocity. This tool provides accurate duct dimensions in seconds without needing charts, supporting various duct types and units.
What We Love
👍 Very helpful for duct sizing
👍 Easy to use in the field
👍 Saves time
👍 Seamless imperial/metric transitions
👍 Excellent tool for duct design
👍 Good duct sizer
👍 Meets objective perfectly
👍 Love the app
👍 Must-have tool
Room to Improve
👎 App should be free
👎 Functionality is pointless for some needs
👎 Doesn't help with traditional residential HVAC duct sizing
This app calculates the correct dimensions for sheet metal ductwork. It simplifies the process of determining airflow and pressure drop for HVAC systems. Essential for professionals in the sheet metal and HVAC industries.
Ductulator - Duct Calculator tops our ductulator apps ranking as of October 2026, with a 4.5-star average from 34 App Store ratings, and it's free to download.
Are there free ductulator apps for iPhone?
Yes — 15 of the top ductulator apps we rank are free to download, including Ductulator - Duct Calculator and SMACNA Duct-U-Lator.
Does Ductulator - Duct Calculator have ads or in-app purchases?
Ductulator - Duct Calculator has no ads and offers in-app purchases, according to its App Store listing as of October 2026.
How many ductulator apps are on the App Store?
We track 92+ ductulator apps on the iOS App Store as of October 2026, ranked by rating, recency, and analysis of real user reviews.