I've got a freebie already on my pc and it is endlessly useful. It's called Stellarium but I can't remember where I got it from now.
As for the gadget - I have no intention of buying one. I just wondered if anyone else had heard of it.
And the pc is all very well if I am only outside my house
I have other reference stuff but I'm not at the stage of taking all my gear out anywhere else other than home yet.