Self-hosted · single container · no cardio, by design
Forge is a self-hosted tracker for weight training — live set logging with ghosts and rest timers, a progression engine with written-down rules, and training analysis where every formula is documented. One Docker container, one SQLite volume, zero cloud.
Every number Forge shows you is computed by a formula you can read — on one documentation page, with the thresholds, the honesty gates, and the reasons. If a chart is hidden, it is because your data cannot support it yet, and the docs say exactly when it will appear.
The Epley formula, applied to your best working set. Singles count as-is, warm-ups never count anywhere.
Exponentially-weighted daily load over 42 and 7 days — the endurance world's performance chart, finally applied to lifting.
Three sessions stuck at one weight without hitting the rep target flags a stall and suggests ~10% off. Written down, so you can argue with it.
Previous-workout ghosts you tap to accept, warm-up ramps computed from your working weight, RPE when you want it, drag to reorder, swipe to delete. Set logging queues offline and syncs when the gym wifi gives up.
Set rep targets in a routine and Forge runs double progression for you: hit the top of the range everywhere and it suggests more weight; stall three sessions and it suggests the deload. The rules are documented, not vibes.
Pair exercises in two taps; rest fires after the group, not between partners. The timer survives reloads, follows you across tabs, and rings on your lock screen over HTTPS.
Form & fatigue (the lifting version of a performance-management chart), recovery sweet spot, strength standards, detraining half-life, push/pull balance, measured rest. All deterministic math on your own sets — no AI, no cloud.
Anatomical front/back figures light up primary and secondary muscles for all 278 catalog movements — and your custom ones. Equipment glyphs make a long picker scannable at 22:00.
Strong and Hevy CSV import, full JSON and Strong-compatible export, a documented REST API with scoped tokens, webhooks, and Prometheus metrics. Your history is a curl away, forever.
One container, one volume. SQLite in WAL mode holds everything — back up a single directory and you own your entire training history. Nightly snapshots, OIDC single sign-on and multi-user come in the box.
Installation guide