iPhone: There are lots of choices when it comes to pedometer apps, but Step Buy Step is decidedly cute and fun. Instead of just counting your steps, it turns the whole thing into a game.
As you take your daily steps you collect a series of companions and each of them adds to your step count. The more steps you take, the more companions you get. While Step Buy Step isn't nearly as complex as the studios other games, such as Zombies, Run!, it is fun and makes checking out your pedometer a little more entertaining.
Step Buy Step ($2.49) [iTunes App Store]