Guide · Updated October 2026

Ranking updated

How to read food labels

The front of a package is advertising. The back is information. “Natural”, “light” or “high in protein” tell you what the brand wants you to notice; the ingredient list and nutrition table tell you what is inside. Reading them takes a few seconds once you know the order: serving size, ingredients, then the numbers that matter to you.

A quick method, then food scanner apps, with a section for food scanner apps rising by visits on the Censuus ranking. This is general information: if you have an allergy, a medical condition or a prescribed diet, follow your doctor or dietitian.

Food scanner apps rising by visits and sponsorship on Censuus

Younger iPhone apps from independent developers:

Ranked by visit traffic and sponsorship on Censuus, not editorial opinion. The list changes as new apps appear and gain traffic.

Ignore the front, turn it over

Words like “natural”, “wholesome” or “light” are marketing, and “light” may only mean lighter than the brand’s own original. The nutrition table and ingredient list on the back are where the facts are.

Read the ingredients from the top

In many countries, ingredients are listed from largest amount to smallest. If sugar, oil or refined flour comes first, that is mostly what you are buying. A long list of things you do not recognise usually means a highly processed product.

Compare like with like

Serving sizes differ between brands and are often smaller than what people eat. Use the per 100g or per 100ml figures to compare two similar products fairly. Watch for sugar under other names, such as syrups, dextrose or concentrated juice.

Let an app do the quick check

Barcode scanner apps read the label for you and explain ingredients and additives in plain words, which helps in a busy shop. Treat scores as a guide, not a verdict. Compare apps in food scanner apps.

Compared from each developer’s own store description.
Look atWhat to checkWhy
Serving sizeis it what you actually eat?figures are per serving
Ingredient listthe first ingredientsthey are the largest part
Per 100g columncompare similar productsa fair comparison
Sugar and saltalso under other nameshidden in many foods
Allergensusually highlighted in the listsafety for allergies

Frequently asked questions

How do I read a food label?

Check the serving size, read the first ingredients, compare similar products per 100g, look for sugar and salt under other names and check the allergens.

Why does the order of ingredients matter?

In many countries ingredients are listed from largest amount to smallest, so the first few make up most of the product.

Are food scanner app scores reliable?

They are a useful quick guide based on available product data, but not a substitute for advice from a doctor or dietitian.