Hazero is a mobile health advisory application that provides localized real-time haze information and personalized recommendations based on a user's location, age, and health. It integrates multiple existing haze data sources and media reports. The app aims to inform users of local haze conditions and advise on protective actions. User data on locations and demographics could be marketed to advertisers of related products to help sustain the app. The initial version will also feature a newsfeed of latest haze-related updates.