WiFi Monitor is a powerful tool that allows you to analyze the state of WiFi networks and track its parameters (signal strength, frequency, connection speed, etc).

It is useful for setting up a wireless router, Wi-Fi usage monitoring. It can also be used as a scanner and discover devices connected to WLAN.

Users' privacy and security is a huge concern these days and WiFi Analyzer (open-source) is designed to use as few permissions as possible. It asks for just enough to perform the analysis. Plus, it is all open source so nothing is hidden!

Most notably, this application does not require access to internet, so you can be sure it does not send any personal/device information to any other source and it does not receive any information from other sources.