CaLUCKthenics is a simple, powerful, privacy‑first fitness app that builds effective bodyweight workouts - instantly. Whether you want a surprise challenge or a custom plan, you’re one tap away from starting.

Your Workout, Your Way

Surprise Me: Instant, randomized workouts with smart warm‑ups and rest timers.
Build Your Own: Hand‑pick exercises or create your own custom moves.
Equipment Aware: Tell the app what gear you have (pull‑up bar, dip bars, bench/chair, wall, ab wheel) and it filters accordingly.
Immersive Player: Full‑screen workout mode with GIF demos, timers, and rep controls.
Guided HIIT: Timed intervals with optional audio cues so you can focus on moving.
Progress That Sticks

Insights: Beautiful charts to visualize volume and consistency.
Activity Calendar: Heatmap of every workout you’ve crushed.
Streaks: Keep momentum with current and longest streaks.
Private by Design

No accounts. No ads. Your data stays on your device.
Note: The Plans tab is temporarily hidden while we finalize improvements. Surprise Me and Build Your Own are fully available.