Hi, @Jesse33
Thanks for posting here in the Roku Community.
We understand your concern about the availability of the Samsung TV Plus app on Roku and are here to provide you with information.
For this matter, it would be best to contact Samsung's support, inquire further about the availability of their app, and let them know that you'd like to stream it on the Roku platform.
It is important to note that most applications on Roku are developed and created by channel providers.
You can contact them at Samsung TV Plus Support
We hope this information helps, and let us know if you have further concerns or inquiries.
Thanks,
Kash
Takashi O.
Roku Community Moderator