Saintly

Saintly provides free, high‑quality preparation for mathematics competitions such as the AMC 10 and AMC 12. It offers a library of over 270 real competition problems taken from past exams, each accompanied by a step‑by‑step solution written by student contributors. The platform also generates practice tests that combine questions from the last five years, giving learners realistic exam experience.

The service tailors study sessions through an adaptive system that uses an ELO‑based ranking, spaced‑repetition scheduling, and topic‑tracking algorithms to focus on a user’s weakest areas. Progress is visualized with analytics, streak indicators and topic trackers, helping students monitor improvement over time.

Saintly is aimed at high‑school students seeking rigorous, competition‑oriented math practice without cost. It is built and maintained by a community of students, emphasizing peer‑written explanations and a collaborative learning environment.