InFlow AI is a web-based productivity tool we developed in 24 hours during a hackathon. It uses OpenAI’s API to transform a user’s main task and estimated deadline into a structured, day-by-day action plan with detailed breakdowns. Our team implemented both frontend (HTML, CSS, JavaScript) and backend (Flask in Python), deploying it via Vercel and Render. We designed a prompt-engineering pipeline that returns organized JSON workflows and integrates dynamic updates for task regeneration and explanation features without page reloads. Despite limited prior experience in AI integration, we successfully built a fully functional and interactive planning assistant under time pressure.