FitnessAI – AI-Powered Fitness Coaching SaaS for Gyms, Coaches Trainers

FitnessAI is a complete, production-ready web application that enables users to track, analyze, and optimize their health and fitness journey using artificial intelligence. Built with Next.js 15, React 19, and TypeScript, this application provides a seamless experience for logging food and exercise through natural language or images, receiving personalized AI coaching, and gaining insights into metabolic health. The platform features a modern, responsive design and includes everything needed to run a health management SaaS business, from user authentication to payment processing.