The 21-Day Diet is an Android application designed to help users achieve a happier and healthier lifestyle. This app is exclusively for those who have purchased the 21-Day Diet and offers a personalized menu, over 400 new recipes, and personalized chat support. In addition, users can access an exclusive member community, monitor their macronutrients, and listen to meditation and self-hypnosis audios.

The app also provides daily fitness activity monitoring, weight monitoring, and other body metrics. Users can choose from more than 4000 models of exercises and physical activities, with clear demonstrations of physical exercise in 3D and video physical exercises. The 21-Day Diet also offers exclusive challenges to help users reach their desired weight and build their personalized plan. This app is the ideal solution for those looking to lose weight, burn fat, gain lean mass, or simply maintain a healthy lifestyle.