On Friday, July 31, 2015 at 10:10:41 PM UTC-7, chris johnson wrote:
I am completely at a loss when it comes to computers. I bought Iglide downloaded maps etc. and was ready to go in 5 stress free minutes. I have not flown with it yet so I do not know if I will need an external gps. So far so good.

You will not need an external GPS. If you have an iPhone 6 or 6+, it will also display pressure altitude, thermal lift dots, etc.

I was having trouble keeping my iPhone/iGlide connected to my Air Avionics variometer, when this loses the connection after a few minutes it defaults to internal sensors/stand alone operation. It works surprisingly well that way. The only thing I missed was the instantaneous wind display, and the lift dots are slightly delayed and filtered with a slow time constant (the iPhone does this to its pressure sensor).