I designed a social wager mobile app that lets friends place casual, low-stakes bets—like dinner, drinks, or friendly dares—on the outcomes of sports games. The app focused on creating a playful and competitive experience rooted in real-life social dynamics rather than monetary gambling. I led the product design from concept to prototype, including user research, feature definition, and end-to-end UI/UX design. Core design goals included simplifying bet creation, fostering friendly engagement through chat and notifications, and reinforcing accountability through fun, lightweight tracking mechanisms. The experience was designed to feel social, secure, and seamless, encouraging recurring use around major sporting events.