Tiny Rewards is a fun app that helps you to improve your childrens behavior through a reward chart. Update their progress in the chart on a daily basis with either a positive or a negative review. You can choose the rewards for your child yourself and set three different levels that the child can achieve. Once the chart is full, the kid is being rewarded. The better the behavior, the better the reward.
Tiny Rewards is completely free to use for 1 child with unlimited creation of new charts. However, to be able to use it for more than 1 child and to use iCloud integration and sharing capabilities you may purchase the Premium upgrade thats available as in-app purchase.