Solid 8/10

Strengths:

the biggest win for me is the user interface. It mimics the actual GMAT testing environment incredibly well. If you have any anxiety about test day, just practicing on a screen that looks and feels exactly like the real thing does wonders for getting your pacing down and calming your nerves. Beyond the visual setup, the question banks are vast and cover a really wide spectrum of topics across Quant, Verbal, and Data Insights, meaning you won't get stuck doing the same narrow types of problems over and over. Plus, they include explanations for the questions. Having that breakdown right there is so much better than just getting an answer key, so you aren't left totally in the dark trying to reverse-engineer why you got a problem wrong.

Would make the product better:

There are definitely a couple of noticeable areas for improvement that you should be aware of before diving in. First, while the explanations are there, the actual quality of the answers can vary pretty significantly depending on the specific question. Some are super clear and walk you through the logic step-by-step, while others feel a bit rushed and leave a lot to be desired if you don't already understand the underlying concept. But honestly, my biggest gripe by far is what happens when your test access finally expires. Once your time is up, you are completely and totally locked out of the system. You can't even view your past analytics, check your error log, or look back at the specific questions you already attempted—even if you have the direct URLs saved in your browser. I really feel like your historical data and past mistakes should remain available for review, since analyzing old errors is such a massive part of the study process.

Overall, I would absolutely recommend the Pro Tests if you are specifically looking for UI-based practice to build your stamina and work on your strict timing strategies. You just need to go in with the right expectations—the questions aren't always going to be 100% "representative" of the official GMAC material, so I wouldn't use them as your only source of truth. However, the sectional tests they offer are really solid for quickly gauging exactly where you stand, allowing you to pinpoint your weak areas and drill them aggressively. Just be extremely mindful of that hard expiration cutoff date I mentioned earlier. If I were doing it again, I would make sure to take screenshots or keep a very detailed offline error log as I go. As long as you plan around that lockout, it is a really valuable tool to have in your prep arsenal and definitely worth the time.