I do not know. The DD membership gives you access to more movies, recipes, meal plans, but the free website includes all the basic material, all news, some of the talks, interviews, more than enough. If you want higher protein information, would suggest Dr Ted Naiman ...he is the doctor who is now advising DD on higher protein. Read through the two top threads in the Semi-LC forum.

https://forum.lowcarber.org/forumdisplay.php?f=138