Using Anti is very intuitive - on each run, Anti will map your network, scan for active devices and vulnerabilities, and will display the information accordingly:
Green led signals an 'Active device', Yellow led signals "Available ports", and Red led signals "Vulnerability found". Also, each device will have an icon representing the type of the device. When finished scanning, Anti will produce an automatic report specifying which vulnerabilities you have or bad practices used, and how to fix each one of them.
Your device may require rooting to use this app, please refer to Root Your Android for instructions.