Fantastic product, adds an interesting extra layer to the printer. Because i have two, it's easy to see which one's ready and which one needs attention. My one grips is adhesive - mine's peeling off the bed after a few weeks and i'm only using PLA/PETG, i fear with high bed temps this may come off. Wifi app is okay if a little basic, took me a while to setup but easy once connected. Would buy again, but with some high temp adhesive first