GSM Spy Finder VS cellumap

Android IMSI-Catcher Detector - Detect attacks of fake base stations such as IMSI-Catcher and StingRay on your GSM/UMTS network.

OpenSignal - Mobile analytics and insights on wireless connectivity from Opensignal, the independent global standard for understanding the true state of the world's mobile network.

CellID Finder - Find a cell phone location using LAC/CellID, GSM BTS coordinates

OpenCellID - OpenCelliD is the largest Open Database of Cell Towers & their locations. You can geolocate IoT & Mobile devices without GPS, explore Mobile Operator coverage and more!

wigle.net - WiGLE (Wireless Geographic Logging Engine)

SnoopSnitch - Collects and analyses mobile radio data to make you aware of your mobile network security and to...