Nice alternative to a GPS watch

I always have my iPhone with me and iSmoothRun is a great app when I am not using my Garmin FR 610.

The ability to track mileage on my shoes, export data to DailyMile and set up interval workouts are great. I just wish a 5km didnt drain my iPhone battery by 20%.

tintallie about iSmoothRun, v4.4.3