GDataSystems Standard Apps freely available.
The apps GDS-Soil, GDS-StreamSed, GDS-Geomap and GDS-Auger are available on Google Play Store.
Link of the tutorials for the Apps already realeased.
Future releases:
Plugins
The QGIS plugins can be used to create sampling points associated with the Apps base maps. One creates regularly spaced points inside polygons and the other creates sampling points at drainage intersections (stream sediments).
More information about these two plugins can be found AQUI
Customized Systems
GDataSystems developed an integrated geodatabase and data acquisition tools to help Exploration and Resource Geologists integrate in one robust common geodatabase all exploration data.
The data acquisition system GDataSystems consists of a central PostgreSQL-Postgis database that stores exploration and GIS data customized to your needs. The database is fed using also customized apps.