CatwalkGrader is the first real-time 2D catwalk grading app. Using machine learning and computer vision, this app contains a catwalk analysis and correction system. Our app uses Mediapipe, an open-source library for real-time multi-person keypoint detection, to analyze the catwalk videos users uploaded. Then, using a well-designed scoring formula, this app would provide the user with accurate scores and tailored feedback of their catwalk video.