Quy hoạch Quận 9 is a free travel and navigation app developed by SOS Company for Android devices. This app provides detailed planning information for each land parcel in the district. It offers a range of features that include information on land parcels, legal documents, general planning, detailed construction planning, investment projects, environmental information, technical infrastructure, and integrated data exchange with other professional sources.

The app is built to provide users with a comprehensive overview of the district with detailed information on each land parcel. It is an ideal tool for architects, engineers, real estate developers, and anyone interested in planning and construction. The app's user-friendly interface and easy-to-navigate menu make it accessible to both professionals and non-professionals alike.