The HealthGuard mobile application aims to provide essential emergency services like ambulance, hospitals, and doctors in one place. It allows users to resolve medical queries with doctors through a blog, add emergency contacts with speed dial, and order and receive medicines delivered to their doorstep. The app uses GPS to send the user's location to emergency services. Key features include messaging, calling, and an in-built database of local emergency phone numbers that are updated based on the user's current location. The HealthGuard app was created to address the growing need for emergency services due to increasing accidents and busy lifestyles.