No more sliding calculators

I just purcahased the iPhone a few weeks ago. And at the same time my 410A superheat and subcooling chart was ruined by my custermers dog.
Yes! The dog tore my chart to pices.
So, I starded calling my supplyers to see if they had the sliding calculator that I needed. And to my amazment none had any.
Well, I came across this app and Ive been putting it to the test. It was I bit confusing at first just because.
Just let me say that this app is great.
Keep up the good work !!!

UpHight about HVAC Buddy®