NextGIS Mobile is a free geographic information system designed for Android devices. It offers powerful features such as a multi-layer map that can display online and offline sources. Users can easily change the visibility and order of layers, as well as navigate the map with panning, zooming in, and zooming out.

One of the most impressive features of NextGIS Mobile is its ability to edit vector data both online and offline, allowing users to modify both geometries and attributes. Additionally, users can record tracks and view information such as coordinates, speed, and elevation. This makes NextGIS Mobile an excellent tool for professionals who need to collect and analyze geographic data on the go.

Overall, NextGIS Mobile is a highly capable geographic information system that offers a wealth of features for free. Its ability to edit vector data offline is especially noteworthy, making it a valuable tool for anyone who needs to work with geographic data in the field.