Yes! The maps in Gaia GPS are among some of the most comprehensive and up to date in the world. Many, like Gaia Topo and OpenHikingMap HD are based on OpenStreetMap -- an open-sourced and continually updated database of everything maps. You can even edit OpenStreetMap! Learn more about OSM here.
You can view live examples of the maps included in Gaia GPS by heading to gaiagps.com/map
Learn more about how to use the map and find trails: