It seems to be a new, very good and promising alternative to Woocommerce Memberships (WoocM), created by an author offering a lot of good plugins on woocommerce extensions repo. It seems to want making some things better than WoocM, with features WoocM does not have and we are often missing, like membership linking, membership transfering, pay per item, grace period after expiration, content protection by URL and more.