Train Libre

Serious tracking without social feeds or subscription pressure. Train Libre prioritizes privacy, local data ownership, and transparent offline analytics.

Train Libre is a private, open-source workout and nutrition tracker designed for people who want serious logging without giving up control of their data. Built to operate 100% offline, it requires no social feeds, no gamification, no ads, and absolutely zero analytics SDKs or data harvesting.

Track your workouts, calories, bodyweight, and muscle recovery in one focused application with secure local storage and optional Apple Health integration.

WHY TRAIN LIBRE IS DIFFERENT: • 100% Offline-First: No mandatory cloud accounts. Your data lives strictly on your device sandbox. • Absolute Privacy: No background telemetry, tracking scripts, or remote profiling. • Structured Gym Tracking: Built for progressive overload and rigorous tracking, not addictive gamification hooks. • Transparent Analytics: Understand your physical trends over the long term with clear, math-based insights.

KEY FEATURES:

1. ADVANCED WORKOUT LOGGING • Log workouts set by set, including warm-ups, working sets, failure sets, and dropsets. • Track precise metrics: reps, weight, and RPE / RIR (Rate of Perceived Exertion / Reps in Reserve). • Build reusable routines, custom exercises, and review completed historical sessions.

2. SCIENCE-BASED NUTRITION & TDEE • Log meals, calories, macronutrients, hydration, caffeine, creatine, and custom supplements. • Adaptive Energy Expenditure Engine: Features an algorithmic Kalman filter-based Bayesian TDEE estimator that calculates your true maintenance calories dynamically based on actual scale weight and nutritional data points.

3. PHYSICAL RECOVERY TRACKING • Visual Recovery Heatmap: Monitor muscle readiness based on localized systemic volume, training effort, and recent training load. • Comprehensive stats for PRs, total training volume, consistency, body measurements, and physical vitals.

4. NATIVE HEALTH SYNC • Optional integration to read physical metrics (Steps, Sleep, Pulse) to feed into your local recovery tracking. • Completely local, secure, and user-controlled.

5. NEXT-GEN BYOK AI MEAL CAPTURE (Optional) • Bring Your Own Key (BYOK): Optional generative AI meal tracking that runs using your own API key. Disabled by default. • State-Aware Matching: Uses a localized "Top-N Fuzzy Alternatives" matching system integrated with Open Food Facts to match your plate accurately while strictly preventing hallucinations. • 100% Transparent: Every AI suggestion is completely reviewable, self-repairing, and adjustable before saving.

DISCLAIMER: Train Libre is not a medical application. Algorithmic recovery feedback, sleep tracking, and physical vital metrics are intended strictly for personal athletic tracking and training guidance. They do not constitute, nor should they replace, professional medical diagnosis or treatment.

OPEN SOURCE & OPEN DATA: Built transparently utilizing trusted community catalogs from Open Food Facts and the wger workout database foundation. The full source code is publicly accessible to guarantee ultimate transparency and privacy verification.