I just took their Free Simulation. GENERAL Impression.The download takes 10-15 minutes.
It is a very User-Friendly software.
In the software there are also other quite cool features. I was most impressed by their question bank where you
can practice questions on the exact topic that you wish, on different difficulty levels, and choose the time limit you prefer.
For example you can choose to practice:
Combinatory - Difficult - 12 questions - 1 minute per question.
The software also includes Flash cards, GMAT games and some articles that I think are identical to the ones in their website.
Their free simulation.The math is very difficult. More than GMATPrep (but the same style).
(I scored 48 on GMATPRep and 47 on PrepWizard)
I believe the Verbal is too easy.(I scored 46 on GMATPRep and 38 on PrepWizard)
Overall I think its a very good test,
Although I would not rely on the credibility of the Verbal score.
I think it is a good option for someone who needs extra practice.
I realy think about purchasing their Question Bank.
BTW, articles are not for me... Sorry.