... lack of workouts or diet plans. It s motivation, personalization, and the feeling that the app actually understands the user s journey. RBT (Radical Body Transformations) is a digital fitness membership app we helped build in collaboration with Anthony Lolli, whose transformation story later became widely known through media platforms like Amazon Prime. I wanted to break down how this app was designed, what problems mattered most, and which decisions actually helped turn it into a sustainable fitness platform instead ...