The VenDoor application is a fully functional mobile application designed to create a bridge between mobile vendors and their customers in Sri Lanka. The application provides a platform that is efficient for vendors to manage their businesses while enabling customers to locate and engage with their preferred mobile vendors in real-time. This prototype's main functionalities are real-time vendor tracking, inventory management, mobile POS (Point of Sale) system and route optimization. When looking into the application from the vendors' perspectives, the application allows them to register their mobile business, update their live location, manage inventory, plan their daily routes effectively, and use a mobile POS(Point of Sale) system to make the billing process more convenient. The application also supports multiple languages, such as Sinhala, English and Tamil, ensuring accessibility to anyone in Sri Lanka. VenDoor provides customers with an intuitive interface to search for vendors based on their product categories, current locations, or preferred vendors. The application shows a real-time map of the vendors nearby so that customers can time it well and come out before the vendors pass their location. Furthermore, customers also have the option to view the current inventory so they can determine whether the product that they are looking for is available.