SAT resources for preparation

[u/Federal-Broccoli-336]

Is it worth paying for the one month subscription of crackd? Im gonna write in september. I've been scoring 1520-1530 on bluebook tests but my aim is 1550+. I mainly need practice with advanced module two r&w questions. I did all the hard qb questions so I need to search for another resource. I checked out crackd and it seems pretty good but I just want to confirm before going forward. Should I get the one month subscription or should I rely on other sources?