Lucky Fit is an Android mobile app developed by a team of engineers from the Google team. The Lucky Fit app is designed to track the user's exercise and movement volume and to generate a health report for the user. 

Lucky Fit is a fitness tracker that can track your steps, distance, and time spent walking, and it can also track the number of times you run or walk and the distance you cover each day. The app can also generate a daily health report for you, showing you the amount of exercise you did and the key indicators of your health.