Barcode scanning
For packaged food the label already has the numbers. Nothing needs estimating.
How to use it
Open the scanner
Pick barcode scanning in the input area. Your browser or the app will ask for camera permission the first time.
Line the barcode up
Hold steady for a moment. If the camera cannot read it — low light, a creased label — you can type the digits by hand.
Check the product
Kallo looks the code up in the Open Food Facts database and shows the product, its photo and its nutrition figures. Drinks are measured in millilitres, the way their label states them. With Premium you also see the fiber, sodium, vitamins and minerals the label lists; they are saved with the meal on every plan.
Choose how to measure it
Three ways: by the serving on the label, by the whole package, or by an amount you type — grams, or millilitres for a drink.
When the product is not found
Open Food Facts is community-maintained, and its coverage of Vietnamese products is still uneven. If nothing comes back:
- Try manual logging with the main ingredient.
- Or describe the meal in words.
- Send us feedback so we know which products are missing.
About label accuracy
Package figures are rounded and carry a legally permitted tolerance. They are usually more accurate than an estimate, but not exact — and the serving on the label rarely matches what you actually ate. If you had two thirds of the packet, type the amount instead.