Every day a player checks in to Habitica, their check-in counter will go up. When the check-in counter reaches certain numbers of days, the player will be given a prize. This feature is available on both the website and iOS and Android mobile apps. Pop-ups let you know when your check-in counter increases and when you receive a prize. Note that the website pop-up tells you the number of check-ins you have left until your next prize, whereas in the apps, the pop-up tells you the total number of check-ins required to get the next prize.