Apps
From Rhizomatica Wiki
Android Apps for GSM signal analysis
GSM Field Test [1]Registros de la fuerza y geolocalizacion visible como una gran linea punteada en un mapa de google. Los registros se pueden descargar como archivos kml.
Shows GSM dBm or WIFI strength on a meter and shows info on cell tower locations, your IMSI and other details about your phone and network. Also logs info downloadable as kml files.
Another RF signal app
Web based tools
Open Cell ID [4]
GSM Signal strength heatmaps, base station locations, API and Android app.
Wigle[5]
Wardriving thing that also shows GSM info.