looks like a pretty and simple app. I'll give it a try. To get it distributed faster I'd suggest to support offline maps especially for mountain bike trails, for navigation and comparison. This is still a pain in mountain biking and there's no dominant solution out there (yes Strava and Runtastic are trying). A lot of bikers still use special gps devices and there are lots of (open source) projects to collect the trails. Maybe you could build on that for a next version.