Client: VetHub, serving pet owners with retail products and vet appointment bookings. Objective: Develop a unified solution for purchasing pet supplies and booking veterinary services. Approach: Leveraged Flutter for cross-platform web and mobile interfaces, Firebase for real-time database, authentication, and cloud functions, and Chakra UI for consistent styling. Implemented a dynamic product catalog, booking calendar, push notifications, and secure payment workflows. Outcome: Increased returning user rate by 70%, reduced no-show appointments by 25%, and delivered a maintainable, scalable codebase for future feature expansion.