Hi Dave,
I have done just the same as you.
I bought the SF4 pro as it was half price.
what a great package it is too.
I am also hoping that I can work out what else I need to use this app to control my LX 200 GPS scope.
Bintel have an Orion Starseek wi-fi module, but it looks like it needs an app called " Starseek astronomy app".
Maybe I am wrong, and maybe it will work with SkySafari ????
maybe some one IIS can advise me.
However the software in Skysafari looks great and works OK on my iPad mini.
Half price was a bargain too....
Geoffro.