github.com/DuarteSantos8/openGym is offline. The repository and the releases are unreachable — not by choice. openGym itself is unaffected: the app, the APK on this page, the demo (now hosted here) and every self-hosted install keep working exactly as before.
Until I get the account back, the code lives on GitLab — and the Discord is where I will announce the moment it is resolved:
Every repository link on this site now points at GitLab — same code, same AGPL-3.0 license, same history, and the releases, container images and APK builds are back.
Your workouts. Your weights. Your data.
A free, open-source gym & body-weight tracker. No subscription, no account required, no telemetry — ever.
Release announcements, self-hosting help with Docker, reverse proxies and passkeys, and somewhere to report a bug. It is where you will hear about a new version first.
Everything a training log needs
Every feature exists because it was needed on the gym floor — nothing is there to sell you anything.
Knows what day it is, starts today's session, pre-fills your weights from last time, times your rest, spots PRs.
Searchable library with animated demos, filterable by body part and the equipment you actually own — plus your own custom exercises.
A routine per weekday, and any day can be rescheduled when life happens — without touching the plan.
Interactive chart with your goal line; every change is colored by whether it moves toward it.
A body diagram read as balance (where the volume went, and which muscles got nothing), fatigue (what is still recovering, weighted by how hard each set was) or strength (how long since you trained it — and the exercises behind it, with their estimated 1RM).
A GitHub-style year view of your training time. Streaks included.
Linear, Greyskull LP, double progression or added time — per routine, overridable per exercise. Your weights are already right when the session opens, and every target tells you why.
Planks, hangs and carries are logged by time, with a timer for the set itself. Stop early and it logs what you actually held.
Per exercise, from your best eligible set — and it names which one. Won't guess above 12 reps.
Plan them, or pair two exercises mid-session and unpair them again. Work the group back-to-back with one rest per round — and log time + speed where weight × reps makes no sense.
Send someone your routines as a small file — no workouts, no weigh-ins — or print it as a clean PDF. Importing merges, never overwrites.
Rate a set as RIR or RPE — whichever scale you already think in. Optional, and every set keeps the scale it was logged with.
No unlocking the phone between sets. The screen stays lit while a workout runs, and lets go the moment you finish.
Import from FitNotes, Strong, Hevy — including the RPE they recorded — or body weight straight out of an Apple Health export.
Full UI translation, exercise instructions in 10 languages, loaded on demand.
Self-hosted profiles sign in with Face ID / fingerprint. Each person's data stays their own.
Light & dark themes, 8 accent colors, a hand-drawn icon set. Looks the same on every phone.
Mark the ramp-up rows as warm-ups and they stay out of your 1RM, your progression and the fatigue map — present in the session, absent from the numbers.
An optional MCP server lets a client like Claude Desktop read your history in your own words — "what did I bench last week?". Read-only, runs on your machine, not in the Docker build.
One-tap JSON export and import. Your training log is a file you own, not a row in someone's cloud.
Screenshots
Live demo
This is the real app with seeded example data, running in your browser — poke around, start a workout, change anything.
Demo data lives only in this browser tab-family and can be reset in its Settings. Prefer a full window? Open the demo full-screen →
Get openGym
Same codebase, your choice of where the data lives: entirely on your phone, or on a server you control.
For anyone — install and you're done.
For homelabbers — and their friends & family.
docker compose upWhy openGym exists
openGym started as a tiny app I built for myself — I just wanted to log my workouts and weight without a subscription app claiming my training data. Then friends wanted in, then it grew a mind of its own.
— Duarte Santos · read the whole story →
Open source
The code is public, the license keeps every fork open, and there is no commercial version waiting behind a curtain. If openGym is useful to you, a ⭐ on GitLab helps more people find it.
There is a Discord for release announcements, self-hosting help and bug reports. It is the fastest way to hear about a new version — and the fastest way to get unstuck if a reverse proxy or a passkey is fighting you.