LG
LG TVs with webOS 4 or newer, from 2018 onward. It is MetroMedia’s first platform.
The next ones
Samsung is up next. Then Google TV, Android TV, Fire TV, Apple TV, Roku and Hisense, with no promised dates.
Contact support
Send an email with your TV ID (Settings → License). With it, we know which TV and app version it is without asking for any of your data.