FoodieCalc

Your personal AI nutrition companion.
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Your data is stored securely in your private account.

What should we call you?

Before we begin

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Welcome to FoodieCalc

BETA This app is in beta — features and AI estimates may be imperfect. Always consult a health professional for medical advice.

Your data is used only to calculate your daily calorie and nutrient targets, and is stored securely in your private account.

What to expect

Your profile — age, weight, height and activity level

Your goal — lose, maintain or gain weight

Your macros — protein, carbs, fat and fibre targets

Your calories — personalised daily calorie target

Takes about 2 minutes · You can update this anytime

Your profile

This helps us compute personalised calorie and nutrient targets using WHO & Mifflin-St Jeor formulas.

Biological sex

Age (years)

Current weight

Height

ft in

Activity level

How active are you on a typical week? This adjusts your calorie calculation.

Your daily calorie target

Based on your profile and goal, here's our suggestion. Adjust as needed.

2000

kcal / day

Maintenance

WHO guidelines for your profile

Protein—

Carbohydrates45–65% of calories

Total fat20–35% of calories

Dietary fiber≥ 25 g / day

Free sugars< 10% of calories

Sodium< 2 000 mg / day

Water≥ 8 glasses (250 ml each) / day

Sources: WHO Healthy Diet 2024 · Mifflin-St Jeor equation · EFSA Dietary Reference Values

Your macro targets

Pre-filled for 2000 kcal/day based on your profile. Adjust if needed.

Protein (g)

Carbs (g)

Fat (g)

Fiber (g)

Water (glasses · 250 ml each)

Weight goal (optional)

We've pre-filled the WHO healthy midpoint for your height. Your goal helps us suggest the right calorie target next.

Target weight

Unit

Healthy weight range for your height

BMI 18.5 (lower bound)—

BMI 22 (midpoint)—

BMI 24.9 (upper bound)—

WHO defines healthy BMI as 18.5–24.9 for adults.

FoodieCalc BETA

🔥0 · 💧0

Settings

App theme

Light or dark

Push notifications

Meal reminders on your phone

Morning · 8:00 AM

Lunch · 12:30 PM

Supper · 7:00 PM

Works on Android & iOS (Safari, added to home screen)

Read our terms

How we handle your data

Take a photo

Opens your camera

Choose from library

Pick an existing photo

AI-powered · AI estimates may vary — always use your judgement

calories per serving

Adjust nutrition values

Name

Calories

Protein (g)

Carbs (g)

Fat (g)

Fiber (g)

Sugar (g)

Sodium (mg)

Scan a product barcode

Opens your camera — point at a label

calories per serving

kcal

2000

calories remaining

Protein

Carbs

Fat

Fiber

Meals today

Nothing logged yet.
Snap your first meal to begin!

of 8 glasses (250 ml each) today

Tap a glass (250 ml) each time you drink.

Add a custom amount

Log your weight

This data is used only to calculate your daily calorie targets and is stored securely in your private account.

Ready when you are — log your first weight!

Goals

Your targets, your pace.

Daily calories

Protein (g)

Carbs (g)

Fat (g)

Water (glasses · 250 ml each)

Weight goal

Setup questionnaire

Re-run the personalised questionnaire to recalculate your targets based on updated measurements or goals.

Gemini proxy setup

For security, your Gemini API key must never be stored in the app. A free Cloudflare Worker acts as a safe middleman — it holds your key on the server side and your phone never sees it.

Step 1 — Get a Gemini API key (free)
Go to aistudio.google.com → sign in → Get API key → Create API key → copy it

Step 2 — Create a Cloudflare Worker (free, ~3 min)
1. Go to workers.cloudflare.com → sign up free
2. Dashboard → Workers & Pages → Create → Hello World template
3. Name it e.g. foodiecalc-gemini
4. Click Edit code, paste this exactly:

const GEMINI_KEY = "YOUR_API_KEY_HERE";
const GEMINI_URL = "https://generativelanguage.googleapis.com/v1/models/gemini-2.0-flash:generateContent?key=" + GEMINI_KEY;

export default {
  async fetch(req) {
    if (req.method === "OPTIONS") {
      return new Response(null, { headers: corsHeaders() });
    }
    const body = await req.text();
    const res = await fetch(GEMINI_URL, {
      method: "POST",
      headers: { "Content-Type": "application/json" },
      body
    });
    const data = await res.text();
    return new Response(data, {
      headers: { ...corsHeaders(), "Content-Type": "application/json" }
    });
  }
};

function corsHeaders() {
  return {
    "Access-Control-Allow-Origin": "*",
    "Access-Control-Allow-Headers": "Content-Type",
    "Access-Control-Allow-Methods": "POST, OPTIONS"
  };
}

5. Replace YOUR_API_KEY_HERE with your real Gemini key
6. Click Deploy → copy your worker URL (e.g. https://foodiecalc-gemini.yourname.workers.dev)

Step 3 — Paste your Worker URL below

Your key stays on Cloudflare's servers. This app never sees it. ✓

Analyzing your meal…

AI is identifying your food