An offline-first revision app (PWA) for STAT 481 — Multivariate Analysis at Qatar University (Fall 2026). Every card, formula, R snippet and question is extracted automatically from the course LaTeX notes and carries a stable reference back to the file and line it came from, so nothing is paraphrased. Leitner spaced repetition, a searchable formula index, verbatim R output, timed practice exams that unlock only after the paper has been sat, and 56 course figures — all installable, fully offline, with every keystroke of progress kept on the student’s own device.