Help Center
Common questions and quick answers
Help Center
What is included for Free?
Read topics 1–14 (71 chapters). Audio for the first two chapters of each of those topics. Chapter quizzes for the first two chapters of Topic 1, with explanations for 24 hours after each quiz.
How do I access master exams?
Upgrade to Pro Monthly/6‑Month or purchase a Day Pass to unlock all 10 master exams (150Q / 3h 30m).
How are results calculated?
Scores are based on correct answers. It’s okay to miss items—many questions include adjacent‑chapter knowledge. Use the review screen (explanations included; free reviews stay open 24 hours) to target your next study block.