Abstract: A method of dynamically sizing incentive rewards for location-based actions by groups is disclosed. A first incentive reward that is to be provided based on a first number of times members of a group of users complete a location-based action is determined. A second incentive reward that is to be provided based on a second number of times members of the group of users complete the location-based action is determined. A magnitude of the second incentive reward is greater than a magnitude of the first incentive reward based on the second number of times being greater than the first number of times. The group of users is notified of the incentive reward and the additional incentive reward.