Adidas' miCoach Personal Trainer iPhone App is a Freeware Nike+ Rival

When Nike teamed with Apple several years ago for a fitness device that measures and records your pace and distance while running, it changed the workout world. Called Nike+, the small sensor

could fit in your shoe, and sync with an iPod or iPhone to track your jogging data. It retailed for $29. Adidas has been running a distant second ever since, but is beginning to catch up with a a free miCoach app being introduced today.

In January, the German-based sports company premiered its $140