Users pay an entry fee to join the fitness challenge such as 10K steps a day for a certain period. If they achieve the goal, they get their entry fee back plus extra cash coming from those who don't meet the goal.
Recent launches
SPRYFIT
Users pay an entry fee to join the fitness challenge such as 10K steps a day for a certain period. If they achieve the goal, they get their entry fee back plus extra cash coming from those who don't meet the goal.
