This paper aimed to support and help people who are experiencing emergencies, mishaps, crimes, vehicle problems, or disasters in Sta. Cruz, Laguna. With this, an Emergency Number Services Rescue Mobile App in Sta. Cruz, Laguna was devised, developed, and evaluated. This app provides different emergency units where people can send emergency message information, GPS location, and direct calls where users or victims encounter an emergency, crime, vehicle problem, or disaster situation. Respondents from Sta. Cruz Laguna using stratified random sampling was utilized. The use of the descriptive method of research was identified in the study. Questionnaires, formal interviews, observation, library resources, and Internet resources were used for data gathering. The emergency application was assessed by the respondents through software evaluation using ISO/IEC 25010:2011, which got an overall weighted mean of 3.79 with an interpretation of “Agree.”