Group fitness challenge website?

peleroja

I am not even sure this exists but I wasn't having any luck trying to Google what I wanted, so I'm hoping someone here might have a solution...

What I'm looking for is a website (preferable to an app) that will allow people using different brands of fitness trackers to compete together in step or activity challenges. We are trying to set up weekly competitions in my office but would like to be as inclusive as possible and allow more than just those with a Fitbit to participate. Does such a thing exist?

I could rely on self-reported step counts but in the interests of simplicity and honesty, it would be great if there's something out there that will use your actual data.

usmcmp

Virgin Pulse does. My work uses it. Some of us got cheap trackers from the company and others use fitbits or garmins. The company sets up extra challenges for everyone as well.