CellID Finder - Find a cell phone location using LAC/CellID, GSM BTS coordinates
Ostorlab - Ostorlab scans your web or mobile application and provides results showing threats and privacy issues.
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!
Privacy Scanner (AntiSpy) Free - Privacy Scanner (AntiSpy) Free performs a deep scan and sends an alert if it catches someone trying to hack into your phone.
wigle.net - WiGLE (Wireless Geographic Logging Engine)
Certo iPhone - Certo iPhone is the only bug and spyware detection tool available for iOS devices.