Polycam is a 3D scanning tool that can be used on iOS, Android, and web platforms. It offers features such as lidar scanning, photogrammetry, and free 3D models. Users can create and manage teams to collaborate on sharing and organizing 3D captures. The tool is suitable for a variety of professions, from architecture to 3D art. Polycam also has a community aspect for users to share and explore 3D content.