Geo Survey - Land Survey is a free application for conducting GIS surveys on Android devices. It provides surveyors with the ability to collect data by marking points on a map and creating polygons or polylines. The app offers two survey modes: walking mode and manual selection mode.

In walking mode, surveyors can collect multiple points by physically walking around the area of interest. Once the survey is complete, a polygon is automatically drawn on the map. In manual selection mode, surveyors can tap on the map to mark points and create polygons or polylines.

To ensure better organization of survey data, each polygon can be categorized under a main category (survey) and a subcategory (class). Additionally, surveyors can assign individual titles or names to each polygon.

The collected data can be viewed in two ways. Surveyors can choose to view the polygons and polylines on the map by selecting a specific survey and class. Alternatively, they can view the data without the map, which is useful for those who only need to access the information associated with the polygons.

Geo Survey - Land Survey also allows users to export and share their survey data in JSON format. However, it's important to note that the free version of the app has a limit of creating 20 polygons or polylines for any class of survey. Despite this limit, surveyors have the flexibility to create new classes for conducting surveys.

Furthermore, the app offers cloud storage capabilities, ensuring that the data is securely stored and synchronized across devices.

Overall, Geo Survey - Land Survey is a valuable tool for surveyors who need to collect and manage GIS data on the go. Its intuitive interface and various survey modes make it easy to capture accurate information while providing flexibility in organizing and accessing the collected data.