Math99th is a tool designed for efficient SAT Math preparation. It offers structured interactive lessons, targeting especially proficiency levels in the 765-800 range. Its AI-based adaptive learning system creates a personalized learning experience, tailoring the course material to each user's strengths and weaknesses. The service offers an extensive question bank, designed to mirror the structure of actual SAT Math questions. Math99th also provides an analytics feature, which provides insights into the user's progress and performance to optimize learning outcomes. A unique feature of Math99th is the 'Electric Training' module, for peak performance training. Moreover, the tool offers competitive leaderboards serving to motivate learners by tracking progress and comparing rankings. The tool is built by a team of experienced industry professionals including ICPC World Finalists, National Olympiad in Mathematics Medalists, and alumni from leading companies and institutions. Math99th employs a system which generates its question bank, each one of which is then verified by human experts to ensure accuracy and relevance.