The Fing application to scan WiFI networks allows to scan a network and find who is connected. Tambiénsirve APRA see the data of the network card and even know the services shared on each network.
Fing is the best tool to know who is connected to a router and to detect possible intruders in our own network.
With Fing you can scan a network and find all the computers that are connected at that time and then get the data to scan the network that we are connected. Fing detects the IP address of the network and then calculates the maximum number of hosts that can be connected in the subnet mask.