The current market availability for wifi enabled temperature probes is pretty limited. You've got: tappecue, stoker, DigiQ, CyberQ Wifi.
I have a CyberQ Wifi and am pretty unimpressed with the software side of it. It has weird limitations to its networking abilities and its a bit of a pain to set up. They all seem like beta tests released as a finished product. There are quality bluetooth gauges on the market, but those keep you within a few hundred feet from the smoker.
Connectsense's home temp/humidity temp gauge software looks great, it just needs an input for a high temp probe on it:
Sensetronics has a solution but its geared towards factory monitoring so you better be ready to drop like a grand on the system.
Don't these companies see the burgeoning BBQ Scene and proliferation of Texas BBQ?
I feel like its about time someone comes out with a thoroughly developed, affordable product. I can check my smoker temps when I'm across town, and they can have my money.