Beginner friendly: Moderate

Starting a side hustle as an AI Fitness Challenge and Gamification Designer can vary in difficulty depending on the individual's background. With the rise of fitness apps and gamified workout platforms, there is a demand for creative minds to design engaging challenges. Beginners might find it moderately easy to start making money in this field with dedication and a willingness to learn. Online resources like courses on gamification and fitness app development can provide valuable insights. The setup costs range from $100 to $500 for tools and software. It may take around 2 to 3 months to start seeing a profit, as building a portfolio and establishing a client base can take time. I'd rate it a 2 because while it requires effort and learning, individuals with a passion for fitness and game design can enter this market with perseverance.