Hi all, first post here! I'm looking for an iPhone app that will let me import GPX or KLM files that I've either created on something like Mapmyride or that are provided by Sportive organisers. I then want that app to provide me with voice turn by turn navigation to my earphones as I ride the route. I don't want to have to mount my phone to the stem and see it visually. Does anything like this exist?