Health Score is a mobile app that provides daily health tips and quizzes sourced from healthfinder.gov to generate a score out of 100 rating a user's health. The app tracks scores over time, allows users to form groups to share scores, and provides resources on nutrition, physical activity, doctor visits, and mental health to help improve scores. Features include daily audio health tips, celebrity news, question hints, graphical score displays, and goal-setting prompts based on quiz results.