Keep the dish.
Raise the protein.
Paste a recipe you already love. Fitnizer rebuilds it protein-first, computes every macro from a vetted food database, and sends the ingredients to Instacart. Built for anyone whose plan needs more protein in less food: a diet, a training block, or a medical weight-loss treatment.
Keep the dish.
Raise the protein.
Paste a recipe you already love. Fitnizer rebuilds it protein-first, computes every macro from a vetted food database, and sends the ingredients to Instacart. Built for anyone whose plan needs more protein in less food: a diet, a training block, or a medical weight-loss treatment.
Eating less is the easy part.
Appetite drops for all sorts of reasons: a diet you are sticking to, a hard training block, a medical weight-loss treatment. What does not change is that the protein has to come first as the plate gets smaller. Fitnizer is built to protect that — so the weight you lose is fat, not strength.
Three steps. The same dish, rebuilt.
Drop in any recipe: a link to a recipe page, or the recipe text itself.
One tap. The AI proposes the swaps and the gram weights; a calculator does the arithmetic. Same dish, protein first.
Protein, calories and fat per serving, computed from a vetted database. Estimates are marked, never hidden.
The same meals, rebuilt.
Built for anyone eating less.
Across 145 tested rebuilds the protein never dropped once. That is the one rule the engine will not break.
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.
Real dishes. Real numbers.
Numbers you can trust, per serving.
Calories, protein, carbs, fat and fiber computed from a vetted nutrition database, per serving, before and after.
One rule: protein never drops.
Across 145 tested runs, protein never dropped once. Feijoada stays feijoada and a signature cut keeps its cut: the rules refuse to turn your food into diet food.
A daily number that fits your body.
A built-in calculator turns your body, your age, your activity and your goal into a daily protein number, then checks every recipe against it.
One new rebuild every day, free.
On Free, one fresh rebuild every 24 hours, saved to your account. Rate the last one and the next unlocks. Pro removes the gate entirely.
Tick what you have. Instacart brings the rest.
Every Fitnized recipe becomes a shopping list. Set your servings, tick the pantry items you already own, and send the rest to Instacart. You choose the store and see every price before you buy. United States and Canada.
- Buy only what the rebuilt recipe needs, at the store you pick.
- Instacart's pantry step catches what you already have at home.
- Prefer to shop yourself? Copy or print the list.
Fitnizer may earn a commission on Instacart orders placed through the app. Availability varies by location.
Under a minute each, narrated. Watch before you sign in.
The physiology behind every rebuild.
Fitnizer isn't a random search or a chatbot guessing at a "healthy version." Every rebuild follows the same evidence a clinician would use — protein targets from published guidelines, fat and texture choices grounded in how the body actually digests food, and macros calculated from a vetted database.
Weight lost quickly is rarely all fat, and what you keep depends heavily on how much protein you eat while losing it. 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.
Heavy, high-fat meals sit in the stomach longer, which is uncomfortable when your appetite is already small. 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.
Built on physiology, not trends.
Fitnizer comes from Dr. José Diego Botezelli, PhD — an endocrine physiologist who studies how the body actually uses food.
Free every day. Pro when you want more.
Trackers charge twenty dollars a month to log what you already ate. Fitnizer changes the recipe, and the free plan stays free.
- One fresh recipe every 24 hours, saved to your account
- Rate the last one to unlock the next
- Real macros, personal protein target, appetite check-in
- Shopping list, print, and the Instacart handoff
- Unlimited recipes, no gate, no waiting
- Save recipes into collections
- Improve a result again with one tap
- Founding price locked for early members
Coaches and creators: branded recipes, send-to-client and bulk rebuilds are coming at $29 a month. Tell us you want it.
Questions, answered.
