My problem with iGrill is that its bluetooth and the signal doesnt go very far. I am planning on getting a wifi thermometer for my pellet grill set up.
That hasn't been an issue for me because the grill is on our deck and the kitchen/family room is adjacent to that, so usually if I'm grilling something I'm right inside there with the TV on. The Bluetooth reaches the living room on the front of the house, too.