It is a third-party, open-source application designed primarily for older Android-based TV devices (like early Fire TV sticks, generic Android TV boxes, and certain smart TVs) that can no longer run the official YouTube app due to hardware limitations or Android version incompatibility.
Here is an investigative article looking into — including what it is, why that specific version matters, the legal context, and security warnings. The Curious Case of Smart YouTube TV 6.14.18 – Why Users Are Hunting for an Obsolete App By [Your Name] Smart Youtube Tv 6.14.18
Don't let nostalgia for a version number cost you your Google account or device security. It is a third-party