openGym is a self-hosted gym and body-weight tracker that runs on your own infrastructure.
The tool addresses the problem of workout data being locked behind third-party servers, subscriptions, and ads. It provides a complete workout management system where users plan weekly routines, run guided workouts with animated demonstrations, track sets and repetitions, and monitor body weight over time. The approach is self-hosted: users deploy it using Docker Compose on their own hardware, maintain full control of their data stored locally, and access it across devices through passkey authentication without relying on external servers.
openGym suits developers and fitness enthusiasts who prioritize data ownership and privacy over convenience of cloud synchronization. It works well for individuals who want a modern workout app experience—including home-screen installation, offline functionality, and cross-device sync—without surrendering control to a commercial platform. The tool is particularly valuable for those uncomfortable with subscription models or concerned about data retention when services shut down. A live demo runs entirely in the browser on example data, though passkey sign-in, multi-device synchronization, and the admin dashboard only function in a self-hosted deployment.
The project shows active development with regular commits addressing bug fixes and feature improvements. Work spans across the full stack, including updates to both frontend and backend components. The maintainer responds to issues and pull requests, indicating ongoing engagement with the codebase and user feedback.
