If you are accessing the Internet on a public Wi-Fi hotspot and worried about your privacy and personal data theft or prevent you accessing the Wi-Fi network, Wifi Protector can help you. It is a simple Android security app designed to detect and prevent all kinds of ARP (Address Resolution Protocol) related attacks in WiFi Networks.
Wifi Protector runs a service on your Android phone that continuously monitors network-related parameters. If anything-abnormal behavior is detected, it will trigger an alarm.
However, though, the detection works on all phones, protection and prevention works only on rooted phones.
I think the app has its own importance, especially if you’re accessing the internet on a unsecured Wi-Fi hotspot, because, on a wifi network anyone who’s interested can see what you’re doing on the network, there are several tools for the same.