WiFi Inspector is a free utility that will allow you to get information about wireless networks around you. The application can be used to view the network's name, level, signal strength, security type, and the frequency. It will also be able to generate a secure password for your router.

The app will work on Android devices running on any operating system. It does not require root access or any other special privileges.

It works by scanning the air around you and looking for the presence of a wireless network. If it finds one, it will be able to get information about it.