A lot or a little?
Parents need to know that KING OF MATH: Math Learner is an education game for iOS devices. Kids practice arithmetic by solving timed math problems, earning points, presents, and pieces of a puzzle along the way. Problems increase in difficulty as kids progress. It's a single-player game that saves progress. There's a parent gate to purchase the full version, which, ironically, can be accessed by solving a simple math problem. Read the developer's privacy policy for details on how your kid's information is collected, used, and shared and any choices you may have in the matter, and note that privacy policies and terms of service frequently change.