FAQ
On data accuracy, privacy, pricing, and how Vitalis relates to medical advice.
- What is Vitalis?
- Vitalis is an AI-powered fitness and health tracking tool. You log your body metrics, workouts and meals, and the AI turns that real data into professional analysis reports, periodized training plans and nutrition programs.
- How is Vitalis different from a typical fitness tracker?
- Two things. First, every conclusion rests on published formulas and guidelines (Mifflin-St Jeor, Deurenberg, ACSM, WS/T 428 and others), and every figure in a report traces back to a source record rather than a model's guess. Second, the AI only turns your data into readable narrative and personalized correlations — even without it, a local rule engine produces complete conclusions instead of leaving you with a blank page.
- Do I need an account? Where is my data stored?
- No. Vitalis is fully usable without an account, and data is kept in your browser's localStorage. Sign in and it syncs to the cloud, so a new phone or computer can pick it up. The data is yours — export a JSON backup at any time.
- Does it work without an AI key?
- Yes. The app falls back to a local rule engine that builds complete analysis reports and training plans from the same published formulas (Mifflin-St Jeor, Deurenberg, ACSM). Rigour and traceability are unchanged — only the AI's narrative and personalized correlations are missing.
- How accurate are the numbers in the reports?
- Reports only use figures you actually provided. Missing data is flagged explicitly — never filled in with defaults or averages. Anything involving energy conversion (theoretical weekly change, weeks to goal) is pre-computed server-side and handed to the model to quote verbatim, so it can't miscalculate. Formula-based estimates such as Deurenberg body fat carry their ±3–5% error range.
- Can Vitalis replace a doctor or dietitian?
- No. Vitalis analyzes your data using published exercise-science and nutrition formulas, and does not provide diagnosis, medication advice or treatment. If you have a chronic condition, are pregnant, or take medication, follow professional medical advice.
Vitalis is an AI-powered fitness and health tracking tool. You log your body metrics, workouts and meals, and the AI turns that real data into professional analysis reports, periodized training plans and nutrition programs.