Just wondering if this is a popular training aid. It's free, which is a good start. I've just got it and done my first couple of runs. 7m and 10m. Get home, check out my distance, time, speed per KM, average speed, calories burnt (not sure how accurate that can be, I assumed everyone would burn at different rates), elevation, I think there's a heart rate monitor if you want to use it and you can go back and look at the route you covered on a map. First impressions are that it is the best free thing I've ever had. I knlow there are alternatives that I haven't tried yet, but I think this does everything I need. Oh, and I post results instantly to Facebook so people I know will know how hard I am working and improving all the time, or how I'm slacking off. Which is a bit of extra motivation in itself.