Decent but I would not use this as my only resource for the gre test. However i would not use just one thing i would use every app on your phone every practice you can find online and every gre book you can find.

It is great cable well packed as per picture above. It works nice and have great capacity of transferring data. It looks strong and durable! Bought it at reduced price for a honest review!

I had to stop taking it on the 4th day because on the 2nd day my food was running out of me like water and I thought I would give it one more day to see if it evened out, but on the 3rd day it was the same. I read if you develop diarrhea stop it and also in the pamphlet it said you may develop diarrhea so I wasn't sure if it was expected or not. On the 4th day, I stopped it and that was my worst day as I sat in the bathroom for most of the morning and felt so weak and shaky I had to drink electrolytes to make myself feel better. I am very sensitive to all medications so this may just have been too rough for my system. I am just sharing my experience. It may work better for some.