Meet the activity tracker just for kids - vivofit jr. It's swim friendly, durable and features kid-approved designs, a 1+ year battery life and a free, parent-controlled mobile app. As children stay on the move with steps and activity, the app motivates them with rewards and a mobile adventure trail to unlock. Meanwhile, parents can monitor steps and sleep and get a summary of their child's 60-minute daily activity goal. The app also lets parents manage and assign chores and give rewards to positively enforce good behavior. It's all easily controlled from mom and dad's compatible Apple? or Android? mobile devices.