Actifit is an app developed by a physician to encourage people to move more. It runs on the Steem Blockchain and has its own io. You have an app on your phone that counts your activity every day. If you post that days numbers (can't cheat there) with a short or long report to the blockchain before midnight, you will get a reward if you have a minimum of 5000 activity points.

The reward comes in form of a token and an upvote on Steem.