Ductulator - Duct Sizer 4+

Kashito Raiva

Designed for iPhone

    • 3.2 • 13 Ratings
    • $4.99

iPhone Screenshots


A compact Metric and Imperial Duct Sizer aka "Ductulator". Combines the ease of a visual wheel for rough sizing and a numeral calculator for more precise calculations.

Affords the user the functionality of locking values and synchronizing between the metric and imperial values. Developed by Engineers for Everyone.

What’s New

Version 1.1

This app has been updated by Apple to display the Apple Watch app icon.

Major update to iOS 8.
-Improved Interface design to accommodate iPhone 6 & 6 plus
-Improved calculation engine for more speed
-Update backgrounds

Ratings and Reviews

3.2 out of 5
13 Ratings

13 Ratings

Still on the wheel ,


So, there is a couple flaws with this app. It is pretty well put together. But there are no instructions and you cannot contact the developer to ask for a correction. It shows the velocity drops as the duct size gets smaller. I can’t tell if I am just using the wrong calculator or something I set is changing the cfm as I change the duct size. I have gone back to my paper one. I was hoping. It surprises me. This is pure math. It ought to be easy. Also, it would be nice if there were a formula built in for the equivalent length ie anything over 100’.

TTboy1911 ,

Very well done app

Kept so simple and familiar, thank you and well done. I bet you can even get the old timers to buy this one. Perhaps a friction loss only lock, or markable/highlight-able values in a future update. Thank you for nicely done app

Prostreet43 ,


Great app

App Privacy

The developer, Kashito Raiva, has not provided details about its privacy practices and handling of data to Apple.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

    Up to six family members can use this app with Family Sharing enabled.

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