openGym

openGym is a self-hosted workout and body-weight tracking application designed to keep fitness data under the user's control. It lets users build weekly routines, launch guided workouts, record sets, and track body weight over time. Its exercise library contains searchable movements with animated demonstrations and support for strength, bodyweight, timed, and cardio exercises. Workout sessions can preload previous weights, detect personal records, run rest timers, and apply configurable progression rules. The application supports passkey authentication, offline use, cross-device synchronization, and installation as a home-screen app. Deployment is designed to be straightforward through Docker Compose without subscriptions, advertisements, or dependence on an external fitness service.