WiFi Thief Detector is an Android utility application developed by Max Mob Apps. As the name suggests, this app allows you to detect and analyze all the devices that are connected to your WiFi network, providing complete technical information such as IP, router IP, DNS, MAC, channel, frequency, speed and more.

One of the most useful features of this app is the ability to find out where your WiFi signal strength is best. You can also analyze the connection quality of all WiFi networks around you, which is helpful when you're on the go and need to connect to a new network. Additionally, if you suspect someone is stealing your WiFi, you can easily see all the devices that are connected to your network and learn to block them if necessary.

Overall, WiFi Thief Detector is a must-have app for anyone who wants to optimize their WiFi network. It's easy to use, provides detailed information, and helps you keep your network secure. This app is compatible with Android 9.0 and is available as a full version with no in-app purchases.