Today I have received this and could it also be used by 9.0 guide?
Hello
I attached the link to an Android application that allows using the accelerometer, compass and GPS to determine the optimal horietnación solar thermal panels, taking into account other factors no "geometric" as are the periods of use and particular needs (eg a second home in the winter does not have to be valid the optimal orientation average all year)
The astronomical use is that the application can generate the image transparency horizon using programs like stellarium or Skymap.
The author is Philip Romero and his team of departamanto COMPUTERS Architecture University of Malaga, at the time my BIL (brother) who has been with us the odd RETA.
It's free
https://play.google.com/store/apps/details?id=com.helioserver.horizon

J.Tapioles