I know there was a thread on this recently but I can't find it. I just put this app on my phone and I like everything about it except that it lets you have too many calories if you log in cardiovascular exercise. A ride of avg. speed of 12-14 mph for almost 2 hours adds up to be 1000 calories and my husband's Garmin says 500. I can modify the calories burned if I want to , but where would I find a more reliable source?