I received mine about two weeks ago. I charged them up and downloaded the app. Tried them out only 1 time so far using two of them on some ribeyes. With the Weber gasser lid open I can have my phone about 10 feet away and receive things on my phone. With the lid closed I can't venture more than about 5 feet at best. The app is ok but I am very disappointed in the actual hardware. On a scale of 1 to 5 with 5 being high I would give the Meater a 2 so far.
They do have other options if you want to connect them to another device that supposedly gives you better range. I haven't tried that yet. I much prefer using my Mavericks and will probably end up giving these things away.