Build a comprehensive workout tracker application with authentication using Vue.js 3's composition API and Supabase in this detailed video tutorial. Learn to set up the project, implement Supabase authentication, create navigation, design register and login layouts, manage user state, and develop workout creation functionality. Explore how to send and retrieve data from Supabase, enable policies, and create various layouts including home and view workout pages. Master conditional rendering, route guarding, and finally deploy the application to Heroku. Access the source code and live demo for hands-on practice, and follow along with the step-by-step guide covering everything from project setup to deployment.