I say thank you, great job, verry usefull

I just want to say thank you for all the effort and passion.
I used the tool to see how long the sun will shine on my roof during dedicated month in summer. So I got a idea how I have to manage my new insulation in regard to the time shift abillity to store heat before it reaches the inner surface.
You may think of this maybe to future sell this software to achitekts..
Thank you Michael