My brother is using meritnation since last 3 years. All I can say is that my bro is very happy wid the product...he uses tests quite a lot...I also guide my brother in his studies and I have seen his score improving...
He also takes tuition but despite that he is dependent on meritnation for his studies. though there are mistakes in questions and lessons, somewhere pictures are not neatly represented..also sometime he doesnt get his answers within 2 days.. but overall the package is really helpful.
My brother is very hesitant in asking questions in class and tuitions, but on meritnation, he actively gets involved and asks doubts...I would say if his involvement in studies has increased, I am happy with meritnation offering.
Good work!