Repstack – open-source hypertrophy training app (offline-first PWA)

Show HN: Repstack – open-source hypertrophy training app (offline-first PWA)

Repstack – open-source hypertrophy training app (offline-first PWA) is a business in show hn launch.

Profile

Hey HN,I built Repstack, an open-source fitness app for evidence-based muscle building. It's inspired by Renaissance Periodization's training methodology.Key features: • 100% offline-first PWA - works without internet, installable on any device • Privacy-first - all data stored locally in IndexedDB, no accounts needed • Science-based - auto-regulation, mesocycle periodization, volume tracking • Free forever - core features will never be paywalledTech stack: React 19, TypeScript, Vite, Dexie.js, WorkboxI'm a lifter myself and was frustrated that most fitness apps either require subscriptions, don't work offline, or don't follow evidence-based training principles.Live demo (installable): https

Within the show hn launch space, the company focuses on its core offering rather than a broad product line.

Directory data places it at the Show HN launch stage.

Website: wulfland.github.io/Repstack