Your Personal Fitness App, AI-Built

Build a personal strength-training tracker. Users save exercises, sets, repetitions and weights, plan weekly sessions and compare progress against their own previous workouts.

Include these capabilities:
- Workout logging with exercise selection
- Progress charts and statistics dashboard
- Goal setting and achievement tracking
- Exercise library with instructions
- Calendar view for workout history

Build the complete working project with its routes, data model and interactions. For saved or private data, implement persistence, authentication and server-side permissions. Keep API credentials on the server. For external services, document the required setup and use test mode until real accounts are connected. Do not present a simulated integration as a completed live connection.

Make the interface responsive, with accessible labels, keyboard navigation and visible focus. Include loading, empty, validation and error states. Use clearly labelled sample data, never invented customer testimonials or results. Choose a visual direction suited to this project and keep typography, spacing and controls consistent. Explain how to run, test, export and deploy the source.

Verify this end-to-end flow:
Log a workout, edit one set and revisit it after signing in again. Check that weekly totals and progress charts use the corrected values.