GameGrid is a next-gen sports league management app designed to meet the needs of players, coaches, and administrators, offering real-time stats, customizable leagues, and a communication platform to streamline operations on and off the field. Key features include an Admin Portal for league creation, player management, and scheduling, along with League Creation & Management, which allows admins to track stats, customize team registrations, and manage multiple leagues. The app provides Real-Time Stats & Tracking, with live updates on match results, player rankings, and scores. Role-Based Access Control ensures the right level of access for admins, coaches, and players, while the Chat & Communication feature fosters engagement through in-app messaging between all user groups. GameGrid is widely adopted by amateur and semi-professional sports leagues, especially in local community sports and youth organizations. Built with a Flutter frontend and a Node.js, Firebase, and Firestore backend, GameGrid ensures seamless, real-time updates and secure, role-based access for all users.