This is the free version of the free application WPS Wifi Checker Pro.

With this application you can check the security of your wireless networks by testing the WPS protocol your routers as their default setting is the main vulnerability of these networks. Manufacturers of routers usually have the WPS protocol enabled by default and depending on the model and manufacturer, the WPS default keys are known and easily exploitable.

If you want to add a layer of security to your network wifi I recommend that you disable the WPS protocol your router or at least change the default PIN.

Vulnerable networks are saved and can generate a QR code you can scan with another device that has the same installed application. This QR code will tell the application data and network WPS pin and the application will automatically attempt to connect to the network.