Logging nutrition

Three ways to log

• Scan a barcode — the fastest route for packaged food.
• Search — across a database of hundreds of thousands of products that lives on your device. It works offline.
• Dictate — "two eggs and a slice of toast" is faster said than typed.

Why the database lives on your device

What you search for and what you eat is nobody's business. So the food database sits locally — nothing about your nutrition leaves your phone. Additional country databases can be downloaded in Settings.

The data comes from Open Food Facts (ODbL) and partly from USDA FoodData Central. Nutrition values in databases like these are not error-free; we correct provable mistakes continuously. Spot a wrong value? Send it to us via Help & support → Feedback.

The energy balance

Your target starts from height, age, sex and activity (Mifflin-St Jeor). Once you've logged both your weight and your food for a few weeks, the app replaces the formula with your actually measured expenditure: how your weight moves at a known intake says more than any formula.