Great app & customer service
Bought their GPS receiver and added this app. It flawlessly updated firmware on their receiver, pushed fresh AGPS data to it, etc. It gives plenty of info on GPS state of the receiver and great granular control over it. I think it is important to remember this app is designed to augment their hardware.
Their hardware GPS receiver works fine with several mapping apps on my iPod Touch. Customer service practically answers your email questions before you hit the "send" button.
If you device does not have a built-in compass, you need to be moving to get compass info. I forgot the iPod Touch has no compass. Tech support straightened me out on that one.
Savage1701 about
UltiMate GPS