Ultimate jumping jack Workout App. Train with your mobile, personal training for free. The best Jumping JACK Workout app is coming with its unique design and powerful function. Real-time AI Human Detection Jumping jacks are a full body workout that can target major muscle groups, strengthen bones, and improve cardiovascular fitness and heart health This is a real personal fitness trainer. This is a cool calorie burner too This App only helps counting the number of jumps . Check out how thi