Sat Nav for iOS when there are no roads beta testers required

Hi chaps, im developing an ios app that is primarily for when you are out on your bike and you want to go on a route, but dont want to need to look at your phone. The app works by accepting a gpx file and giving audable notifications if you go off route. Im looking for beta testers to get this app into a pristine condition. If you would like to test please send me an email address that you can open on your ios device to mcbontempi@gmail.com