Sprint 4 marks the final stretch of our mobile app development journey, where our focus lies on optimization and refinement. With all features fully implemented, our aim is to enhance performance, eradicate bugs, and fortify security measures. We conduct a meticulous Performance Audit to optimize code, reduce latency, and ensure a smooth user experience devoid of any GUI lagging. Additionally, proactive measures against ANRs and OOMs are implemented, guaranteeing uninterrupted app functionality. Through rigorous testing and user-centric design principles, we strive to deliver a flawless mobile experience that exceeds expectations and sets new standards for excellence in app development.