Fitness apps are everywhere, yet most of them struggle with the same problem: people start strong, then quietly stop showing up. The issue is rarely 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 of just another content library. If you re building in fitness, subscriptions, habit formation, or community-driven apps, this breakdown should feel familiar.
