This document provides an overview of the TreeCo. Mobile Application Development Project, including its purpose, scope, product overview, user characteristics, limitations, and specific requirements. The project aims to develop a mobile-based application named TreeManager to establish proper communication between customers and TreeCo. The application will be developed for both Android and iOS platforms and will include features such as registration, login, purchase, and after-sale support. The main target audience of the application is keen gardeners, particularly those aged forty to sixty. The system has certain limitations, such as the inability to process thousands of customer requests simultaneously and the lack of a website interface. The document also includes references, external interfaces, functions, performance requirements, logical database requirements, design constraints, software system attributes, verification, and appendices.