DuarteSantos8/openGym

OpenGym is a self-hosted gym and body-weight tracker that lets you plan routines, log workouts, and monitor progress on your own server.

The tool addresses the problem of fitness data being locked into proprietary apps and cloud services by providing a self-contained application you run locally. It works as a modern progressive web app installable on your home screen, with passkey-based authentication, offline capability, and cross-device synchronization. The core workflow involves planning weekly routines from a library of over 1,300 exercises with animated demonstrations, then logging guided workouts that pre-fill weights from previous sessions and detect personal records automatically. The app tracks muscle engagement through a body map, monitors fatigue and detraining status, and supports importing existing workout history from FitNotes, Strong, and Hevy. It handles supersets, warm-up sets, drop sets, rest-pause training, timed exercises, and cardio logging, with features like plate math for barbells and per-side rep tracking for unilateral movements.

You should choose this tool if you want complete ownership of your fitness data without subscriptions or cloud dependencies, and if you are comfortable running a Docker container on your own infrastructure. It suits individuals and small groups who value privacy and want a modern app experience without the typical trade-offs of self-hosting. The tool distinguishes itself by combining a comprehensive exercise library with guided workout sessions and detailed progress analytics, all within a single self-hosted package.

The project shows active development with regular updates to the changelog and roadmap. The maintainer has published a self-hosting guide and provides multiple distribution channels including a live demo, Docker setup, and native Android builds. The codebase is built on established technologies including React, Vite, Node.js, and WebAuthn, indicating a focus on modern web standards and security practices.