The rumored Kinect PlayFit application for Xbox 360 that tracks calories burned across multiple games has released for free today in the United States. Further regions will get access to the download later this week, according to Xbox Live's Larry Hryb.
I have a feeling this app won't be particularly relevant for many of you, but similar to Holly, I tend to use my Kinect more for cardio than anything else. So, neat, I guess? For what it's worth, Kinect PlayFit even has Achievements. I've yet to see the full list of supported games, but Dance Central 2 and Your Shape: Fitness Evolved 2012 were both specifically mentioned.
Kinect PlayFit launches today [Major Nelson]