Duct Calculator App Reviews

I like it But i wish i can lock friction rate I hope in next version i can do it

I really like the dial format for selecting duct sizes.

It’s a little difficult to get used to the way things work at first, having only used the rotating cardboard Trane ductulators in the past, but once you get used to it it is much more accurate and far easier to obtain correct sizing for very specific lengths and widths of duct.

This thing is great. only 2 things would make it perfect. 1) Flex duct sizing. 2) multiple friction rate fields, so you can select both your return AND supply friction rates at the same time and see output of both. plus have those fields be lockable so you can’t change them by accident. If these changes were made, I would buy this AGAIN and likely so would every consultant in my company.

Do I have to pay monthly subscription for this app or just one time pay at the start?

I've been using it for many years, my go to every day.

Not happy with my purchase

Nothing to say