It is a paid service and I got an email about it from College Confidential. Is it any better than the free practice on Kahn Academy?
I doubt it. I would NEVER use a test prep company. Your money is far better spent on private tutoring where a test prep tutor can individualize what you need. Test prep companies have to cater to the masses. It’s also very expensive. For probably less money, you could go private.
For reading and writing, Khan Academy should be enough. You get all the resources and practice problems there.
For math, I have had a bad experience with Khan Academy or one-to-one tutoring. Test prep companies do not focus on the individual students. So I instead used a platform where we get personalized AI-powered feedback, multiple tutors (can switch between them to find the right fit), and unlimited practice problems. It was so much fun to use, and cheap too. I got a 790 on maths. I can share more about my test prep if you’d like.