Hello,
The official mocks on MBA.com are the gold standard for score estimation because they use retired GMAT questions and the official scoring algorithm, making them the most accurate representation of your true GMAT score level. However, these tests are limited in number and do not come with detailed explanations or performance analytics. For this reason, they are best reserved for the final leg of your preparation, when the primary purpose of taking mock tests is to assess your current level as precisely as possible.
Earlier in the journey, your prep needs are different. During the early and middle phases, the main reasons for attempting mock tests are practice, building stamina, reviewing and learning from explanations, and gaining analytical insights from every attempt. High-quality third-party mocks with a proven legacy can be helpful here. For example,
Experts’ Global GMAT mock tests (disclaimer: I represent
Experts' Global) provide section-wise, topic-wise, and question-type-wise analysis after each test, along with detailed time management insights. The system also highlights your five weakest areas in each section based on your recent performance, and these insights are particularly valuable during the early and middle stages of preparation.
How to combine official mocks with third-party mocksDuring the early and middle phases of preparation, use high-quality third-party mocks for their rigorous practice value, detailed explanations, and rich performance analytics, and let these resources give you a solid ground in your preparation. Then, in the final weeks, when assessing your current GMAT level becomes the main priority, shift to the official mock tests, since they remain the best metric for understanding your correct level on the GMAT.
For verified reviews of all the prominent GMAT mock tests, please visit:
https://gmatclub.com/reviews/otherHope this helps.