The Cogo Survey Pro application is a free android application that is a powerful tool for field work. It is designed to be used for field measurement, which means that it is not a map, but a tool for calculating areas and distances. The app is based on the concept that everything is measured in distances and areas. 

The application can be used for many types of measurements, such as area, distance, elevation, slope, level, and perimeter. It can also be used for mapping. It is compatible with many android devices, such as tablets, mobile phones, and even some desktop devices. The app is designed to be used by the user, so the user can add, remove, or reorder points to create different shapes. It is also compatible with other applications that have access to the device's camera.