You can do a 24 hours trial (not 24 hours of using, like I thought, but if you install now, tomorrow it's over), and see for yourself how it works and how you score. If you see that on all the tests you score 100%, it will not be necessary for you, otherwise it might be interesting.
Oh, and when you try it, don't try the odds
and outs trainer, but only the pre flop trainer and the equity trainer. Those two will expire after 1 day, but the odds and outs stays available for free, so you can do that after the others expire.