Nope, but I took the MCATs many years ago, and I've forgotten far more than I remember. From what I hear, the GMAT is pretty heavy on math, too, and while I never had a problem learning or using it, I had a great deal of trouble retaining it for any length of time, and for me, Kaplan was the most help, as it preps you for the types of problems/questions you'll be faced with. I imagine there's a great deal of online help now, too, (which I was without), so I don't know how that compares with Kaplan. Wish you the best on studying and taking the test! (TP)