The GS911 WiFi can be considered 2 tools in one
You can use it with full functionality off line with the Windows PC Application connecting via USB cable or WiFi in the workshop
You can use it via WiFi with the browser interface into it's own WiFi hot spot for basic functionality with a Laptop,Tablet or Phone, full service functionality can be used via the Hexcode Web server if you have a WiFi network with internet connection or phone out on the road