Drop in any recipe: a link to a recipe page, or the recipe text itself.

One tap rebuilds it — the same dish you actually want, re-engineered for protein and satiety.

Real macros for the dish, plus a personal protein target calculated from your body and your goal.

Protein-first rebuilds, so the weight you lose is fat, not strength.

Lower-calorie versions of the food you already love.

Your own recipes, rebuilt — not a diet of someone else's meals. Nothing banned, nothing extreme.

When appetite drops fast on a GLP-1, a large share of the weight you lose can come from muscle, not fat. Leading nutrition guidelines put the target near 1.2–1.6 g of protein per kg of body weight — and most people fall short. Fitnizer rebuilds every recipe protein-first, and never lets protein drop below the original.

GLP-1 medications slow how fast your stomach empties, so heavy, high-fat meals can sit uncomfortably and worsen nausea. Fitnizer trims the fat that isn't earning its place — swapping cooking oils, creams and fatty cuts for lean equivalents — so a meal sits easier when your appetite is low.

You can't live on shakes and protein water — and you shouldn't have to. The point is to keep eating the meals you actually enjoy, rebuilt to fit your goal. Real, satisfying food with enough calories to function is what makes fat loss something you sustain for months, not days.

A leaner recipe only helps if you'll actually make it again. So each rebuild respects the chemistry of the dish — choosing sweeteners that still brown and caramelize, protecting texture through the right cooking temperatures, and staying as close to the original as the numbers allow. The goal is the same dish, not a diet version of it.

Ask a chatbot for a "healthy version" and it will confidently invent numbers. A web search just hands you someone else's recipe. Fitnizer is different: the AI only proposes the ingredients and amounts — every calorie, gram of protein, carb and fat is then calculated from a vetted database of 755 foods, using rules designed by a physiologist. The numbers are computed, not guessed.

Fitnizer comes from Dr. José Diego Botezelli, PhD — an endocrine physiologist whose work centres on insulin resistance and how the body uses food. That background is exactly what shaped Fitnizer's rules: protect muscle, ease digestion, keep the food real. It's the difference between an app that follows nutrition trends and one built on how metabolism actually works.

Your first recipe free, then leave your email and get a fresh recipe every day. Real macros, protein target, the full rebuild engine.

Unlimited rebuilds, saved recipes, plans that adapt as you progress. Early members lock founding pricing.