Milprep
Plans a household's meals for the week. Everyone eats the same dish, each in their own version and portion, and the shopping list writes itself.
- For
- Households where everyone eats differently
- Year
- 2026
- Role
- Own product. Design and development
- Stack
- Ruby on Rails 8, Hotwire, SQLite, Tailwind, RubyLLM, iOS and Android, Kamal
In use
Logging what was eaten in plain text, the week, a recipe and the shopping list. Test data. In the demo, the AI's answer is simulated. The app is in Spanish.
The problem
In many households everyone eats differently. One person is vegetarian, another wants to lose weight, another trains and needs more protein. Working out what to cook for the week, how much and what to buy takes a good while every Sunday.
Diet apps are made for one person. Recipe apps don’t know who eats at your table.
What I built
Milprep plans the week’s lunches and dinners for the whole household, with recipes the household already knows. Everyone eats the same dish, and each person gets their own version and portion.
The AI proposes the plan in a single call. Portions, nutrients and the shopping list are calculated with formulas, without AI.
If something changes, you write it in a sentence, like “I have no pasta” or “two friends are coming on Saturday”, and the plan adjusts. It works on the web, on iPhone and on Android.
Where it is today
It is live at milprep.club. For now, access is by invitation or from the waitlist.
What it does
-
One dish, several versions
Everyone eats the same dish. A vegetarian gets the lentil or soy version of the same meal. You cook once and shop once.
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The right portion for each person
Each person enters their age, weight, activity, goal and tastes once. That gives a daily target for calories, protein and vegetables, and portions adjust on their own. Nobody counts calories.
-
The shopping list comes from the plan
The list adds up every recipe and version, rounds to units you can buy and groups items by aisle. Ticks are shared across the household, and the list can be sent on WhatsApp.
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What was really eaten, in one sentence
"Martín went out and had pizza." That is enough. The app marks who skipped the plan and logs what they ate, with an estimate of its nutrients.
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Today, for each person
Each person sees what was planned and what they ate, as bars against their daily target.
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Recipes to cook step by step
Each recipe has time, difficulty and nutrients per version. Cook mode shows one step per screen, with timers, and keeps the screen awake.
Got an idea? Write to me.
It can be something that is still only in your head, or a business that already works and needs a system. You don't need to have it all worked out, know about technology or have a big budget.
First tell me the idea. Then we'll work out together how to make it real and where to start.
I answer myself.
How working with me goes →