I bought this product several weeks ago, but I didn't install and use it until last week.  I've used it six times in a little over a week.  It's fun, and it takes all of the guess work out of grilling.  I've cooked perfect filets, chicken breasts, salmon steaks and burgers.  Everyone has his/her choice cooked to perfection.  How did I ever grill without it.  I close the lid, go over to my lounge and wait for the beeper.  At first, I wasn't sure I could trust the app, but now I know I can.  It takes all guessing out of grilling---and no more sticking my arm into a hot grill to check and instant read thermometer!