openGym

openGym is a free, open-source gym and body-weight tracker that stores user data locally or on self-hosted servers.

openGym is a free, open-source workout and body-weight tracker designed for privacy without accounts, clouds, or telemetry. Workouts open with weights from previous sessions filled in, integrated rest timers, and automatic personal record alerts. It includes progression schemes like Linear, Greyskull LP, and double progression, alongside a database of 1,324 animated exercises. Users can enable an optional AI coach powered by Anthropic, OpenAI, Gemini, local Ollama endpoints, or Claude Code/Codex runtimes. The software runs directly as an Android app or as a self-hosted Docker service supporting multiple profiles via passkeys.

openGym at a glance

Best for: Software engineer, Product manager
Runs on: Android, self-hosted, open source
Pricing: Free and open-source under the AGPL-3.0 license.
Released: July 2026
Category: AI coding tool
Website: opengym.duarte-santos.ch

Key features

Log guided workouts with automatic rest timing and PR tracking
Apply progression rules like Linear, Greyskull LP, and double progression
Connect optional AI coaching using Anthropic, OpenAI, Gemini, or Ollama
Explore 1,324 animated exercises filterable by muscle and equipment
Track body weight against targets with interactive charts
View training history through an annual workout heatmap
Self-host using Docker with passkey authentication for multiple profiles

Use it for

Logging gym workouts and tracking personal records without cloud accounts
Self-hosting a shared fitness tracker for multiple users using Docker
Getting workout suggestions from self-hosted or API-based AI models
Tracking body weight trends and training consistency over a year

Companions

Tools that articles about openGym recommend using with it, each with its job.

Context7 — Provides up-to-date documentation for AI agents and code editors.
Ollama — Run local models at zero marginal cost, with code kept on your machine.
Daytona — Runs sessions in isolated sandboxes synced to git branches.
Composio — Equips AI agents with tools, managed user auth, and sandboxes across 1,500+ apps
Oh My OpenCode Slim — Lightweight multi-agent orchestration and background tasks.

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