The iPhone has a number of fitness applications. Many are free so I've been giving them a shot. Today before my ride I opened Fitnio and clicked on the bike. Two simple clicks. It then began tracking my mileage and calories. I thought this was pretty cool.When I got home I was pleased to see it was accurate. Then it suggested that I log onto the web site associated with it. Sure, why not. It gave me a map of my ride along with stats for each mile and elevation! More data to play with!!