Challenge Study Engine — Gamified Active-Recall Study App

Just launched Challenge Study Engine, a desktop application that converts textbooks and study material into gamified active-recall sessions — rapid-fire questions, leveling bars, combo streaks, and boss-fight study rounds, built to replace passive rereading with retention that actually sticks. Built and launched under Vertex Growth Labs.

Check it out: https://www.vertexgrowthlabs.com/solutions/challenge-study-engine