SuperWiFi WiFi Master is a free utility for Android devices that will help you to see who is connected to your Wi-Fi network, how much data they are using, and what kind of device it is. It will also show you the speed of the connection and the amount of data that is being transferred.

This app can also help you to see the default password for the router.

This application can also help you to access the router admin page, which is a very important page for making changes to the settings of the router.