StoryAI is an innovative application designed to craft unique and engaging stories tailored for children across various age groups. Leveraging the power of generative AI, the application generates stories based on user input and preferences. The application is developed using React Native, Node.js, Firebase, Redux, and Express. The generative AI is powered by OpenAI's GPT-4. The project was done during the course Prototype Development for Mobile Applications at Umeå University. The project was developed in a team of 5 people and I was responsible for the development of the backend and the integration with OpenAI.