Catya

This note-taking app integrates category theory to structure knowledge, enabling users to create flexible, interconnected knowledge hierarchies. Leveraging techniques like spaced repetition, it intelligently schedules review sessions based on psychological principles to optimize long-term retention. The app is gamified with achievement systems, progress tracking, and rewards for consistent use, fostering engagement. This synergy of mathematical rigor, cognitive science, and playful incentives creates a powerful tool for deep learning, creative thinking, and organized knowledge management.