Hi John,
Roku TVs use the Roku operating system, while Samsung TVs use our own smart platform called Tizen. With Tizen, you'll still get access to your favorite streaming apps like Netflix, Hulu, and Max, but with a more customizable home screen, faster app switching, and exclusive Samsung features like Multi View, Samsung TV Plus (free live channels), and Smart Hub for easier content discovery. It’s all built in, no extra device needed.
~Samsung Advisor