Fitby is a dynamic fitness application developed using Flutter for cross-platform functionality and Firebase for backend integration. The app is designed to help users stay motivated by allowing them to workout with their favorite sports and fitness icons. Key features include personalized workout plans, real-time progress tracking, and seamless synchronization across devices. Firebase integration ensures secure data management, real-time updates, and efficient user authentication. Fitby is tailored for both fitness enthusiasts and beginners, providing an engaging and interactive fitness experience on both iOS and Android platforms.