Emergency response in developing cities often suffers from delayed reporting, poor coordination, and limited communication between agencies and the community. To address these challenges, this study introduces a mobile and web-based emergency response application that leverages Android technology, Google Maps integration, geolocation services, and call verification. The system was developed following the waterfall model, encompassing requirements analysis, design, implementation, testing, and maintenance. Beyond facilitating real-time submission of incident reports and generating daily, weekly, and monthly statistics for city officials, the novelty of the proposed approach lies in its integrated, multi-agency platform. Unlike existing solutions that are often single-purpose, the application enables real-time, two-way communication, accurate geolocation tracking, and automated statistical reporting within a unified environment. Its main contribution is providing a scalable ICT-based framework for coordinated emergency management, empowering agencies such as the BFP, PNP, MDRRMC, MHO, and PETSARAG to collaborate seamlessly while engaging citizens as active participants in disaster preparedness and response. Evaluation results demonstrated that the system is efficient, user-friendly, reliable, and effective in enhancing community safety, making it a viable model for replication in other municipalities.