HVAC Pipe Sizer - Liquid

With a bit of fiddling, can get some pretty accurate pressure loss calls. Would love to see an app were you draw out a piping scheme with your finger and put in pipe lengths and typical piping types like grooved connections or welded etc. similar to TACO's desktop software.

I have been amazed to find this program on the iPhone. While it's not a full blown piping program it never the less gives accurate results for the times I've used it. Just input the basic info such as pipe diameter number and types of fittings, fluid type and it will tell you flow. Or you can use it to find diameter required for a flow. The only issues I have with it are: pressure drop is always given in ft instead of psi. Also it would be really nice if it had a table of pipe sizes to aid data entry. Give me these simple changes and I'll give you 5 stars.

I don't need this app, I bought it to see how actually they built this hvac app, and I have to say it's poor work. This souls be very simple calcs and formulas. I tested the app with copper L pipe, fixed pipe diameter, flow and length, and keep changing fittings which should change the total head loss. Surprise!!!! It's doesn't. So they got the internal formulas or functions wrong. I will not trust this app calcs to size any system. For people who actually worked on this. Please pay some more attention when you build and sell apps. It's just not about releasing an app, it's something people will pay for and expect to get some trusted result.