"Challenging and Insightful: A Student's Take on GMAT Club Tests"

Strengths:

Challenging questions that exceed actual GMAT difficulty
Adaptive testing
User-friendly interface
Detailed analytics
High-quality Quant section

Would make the product better:

Yes

I tried GMAT Club Tests, and I have to say, they’re pretty solid for prep. The questions are tough and potentially even tougher than what you’d see on the actual GMAT. I liked how the tests adapt to your level, which keeps things interesting. The interface is easy to use, so you can focus on studying without getting distracted. After each test, the detailed feedback really helps you figure out where you need to improve. Just a heads up, though...the Quant section can be a bit brutal! Overall, I think these tests are a great resource for anyone serious about the GMAT.