A free program for Android, by Aplitop – Surveying Civil Engineering Solutions.
TcpGPS is a tool that allows you to develop all types of surveying projects from an Android smartphone or tablet.
It is a field application that is used to develop topographic maps, which are essential for many types of projects, such as those for construction, land survey, and mapping.
You can use the professional version of the tool for more advanced projects, such as those that require the ability to import and export files. It is also useful for projects that involve the creation of topographic maps and the development of contour lines.