I have a 5 in 1 sensor that I got for Christmas with the 06039 display. I have downloaded the app as it advertises as being able to connect to a smart phone (iPad in this case). I am now discovering it says it must be connected to the router? I don’t have the display connected to a pc and do not intend to. Am I right in that I would need to order this 100 dollar plus hub to connect.... to my iPad? Other ones on the market have wi-if. Does this not in 2018?.