Flex AI is a mobile app designed to help users build muscle or lose weight efficiently. It offers a vast library of over 1000 workouts, personalized to individual fitness goals like weight loss, muscle building, and strength gain. The app features auto progression, body weight tracking, and even a plate calculator. With its game-like elements and fun challenges, Flex AI encourages users to stay engaged and form consistent workout habits. Available on iPhone and Apple Watch, the app also allows full customization of exercises, routines, and schedules, ensuring a tailored fitness journey.