Every change, backed by your own data
Body, training, nutrition and sleep — all in one view
Free AI fitness & health assistant · No sign-up · No credit card
For people who log diligently — but can not tell what the numbers mean.
Logging is easy. Understanding is hard.
You log something every day. Nobody tells you how hard to train today, or how much to eat.
It sees the changes you can not feel.
Your weight swings daily — one reading tells you nothing. It reads the trend: faster or slower than last week, and whether to adjust.
Three moments in one day
No cheerleading. It tells you how much of that 0.4 kg is water — and that your deficit sits right inside the ACSM-recommended 0.5–1.0% per week.
It suggests cutting today volume by 15% — that is the RPE trend talking, not a feeling.
Against your training load and goal, it gives you one line on how to eat tomorrow.
Every number can tell you where it came from.
You do not have to take our word for it. Every figure is labelled with its source and its error margin. Missing data says missing — it is never papered over with an average.
Mifflin-St Jeor · Deurenberg · Epley · ACSM · WS/T 428-2013
Your plan fits your equipment, not a template.
If you only own a pair of dumbbells, no barbell bench press shows up. And when the same load feels harder this week, it tells you to back off — instead of letting you grind through it.
Enjoy your food. Still know the numbers.
Say breakfast was two eggs and a glass of milk — that is the whole log. How much protein is left and how to close the gap, it just tells you.
You do not have to explain yourself first.
It already knows your weight trend, training volume, protein intake and sleep. So when you ask how to close your protein gap, the answer uses your numbers — not generic advice copied off the internet.
Analysis reports, training plans, weekly menus and one-line meal parsing are all generated by it too.
Stop deciding what to eat every day.
It lays out your week against your calorie and macro targets — more carbs on training days, fewer on rest days. Got a dinner out or a food you avoid? One line and it re-plans.
Three ways it differs from a typical tracking app
Every figure traces back to a published formula and your own records — so you can check it yourself.
If the AI is down, your report still arrives. The local rules engine produces a complete conclusion — not a blank page.
Your burn is not just a formula. It is back-calculated from your weight change and food log — and with under 14 days of records it would rather say nothing.
Your data is yours.
Everything works without an account — records stay in your own browser. Sign in and they sync to the cloud, so a new phone gets them back. Export to JSON whenever you like.
Free · No credit card · No sign-up · No API key required
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.
Vitalis analyzes your data using published exercise-science and nutrition formulas. It does not provide diagnosis, medication advice or treatment. Content is for information only.