Food Scanner Apps Compared: What Each One Actually Scores

A disclosure first: we make Label Snob, one of the six apps below. That's why everything here about the other five is quoted from their own pages, dated, and linked, and why we don't rank them. We say where each one is the better pick, including over ours.

Why do food scanner apps give the same food different scores?

Because they're answering different questions. One app asks "how balanced is the nutrition?", another asks "how processed is this?", another asks "does it break any of our ingredient rules?" Scan the same jar in all of them and you get a letter, a number out of 100, a 1-to-10 rating and an approved-or-not — each correct by its own rules.

NPR tested this in a grocery store in 2025 and found that "different apps can provide different scores for the same product." Yuka's co-founder and CEO, Julie Chapon, gave NPR the plainest explanation we've seen: "These differences often stem from the fact that each app uses its own methodology, with varying degrees of transparency and scientific grounding."

So the useful question isn't "which app is right?" It's "which app is measuring the thing I care about?"

What does each app actually score?

Each row below comes from the app's own published method or App Store listing, checked on September 23, 2026. Apps change their methods; the linked source is the current word.

Yuka: nutrition first

Yuka's help center spells out the formula: "Nutritional quality is 60% of the score," "The presence of additives is 30% of the score," and "The organic dimension is 10% of the score." The nutrition slice "is based on Nutri-Score," the European nutrition label that weighs sugar, sodium, saturated fat and calories against protein, fiber and fruit and vegetable content. Yuka also scans cosmetics, with a separate ingredient-based method.

Best for: a quick, widely used read on overall nutritional balance, for food and cosmetics. We went deeper on the formula in Yuka's scoring is 60% calories.

Open Food Facts: the open database

Open Food Facts is a collaborative, open database, and its app shows each product's Nutri-Score, which it describes as grading "the nutritional quality of food products with A to E grades," and its NOVA group, "a classification in 4 groups to highlight the degree of processing of foods." Its App Store listing leads with ultra-processed foods and calls the app "ad-free."

Best for: seeing how processed something is, for free, and anyone who would rather read two honest grades than one blended number.

EWG's Healthy Living: nutrition-anchored, 1 to 10

The Environmental Working Group publishes its full equation. "Scores range from 1 (best) to 10 (worst)." Nutrition anchors the score; then "EWG weights ingredient concerns at 0.2 and processing is weighted 0.1," so "the overall score can never be better than the nutrition score." Processed foods that aren't certified organic take a small added penalty.

Best for: people who want nutrition, additives and processing in one number, with the math published.

Bobby Approved: a rulebook

Bobby Approved, from Bobby Parrish of FlavCity, doesn't blend factors; it applies rules. Its published standards begin "Free of seed oils." "Free of refined or artificial sugars." "Free of artificial or "natural" flavors." The app tells you whether a product is "Bobby approved or not, and why," with the failing ingredients highlighted; since January 2025 it also has an "Almost Bobby Approved" status. When a product doesn't pass, it suggests alternatives.

Best for: shoppers who already share those rules and want a fast yes or no. Its rules are about ingredients, so it says less about a product's overall nutrition.

Trash Panda: an ingredient flagger

Trash Panda's App Store listing says it helps you avoid "seed oils, food dyes, artificial sweeteners, allergens, and preservatives," and that it was "created by a certified nutritionist." When a barcode isn't in its database, "the app will prompt you to take a photo of the ingredient list." Paid membership adds the ability to "flag your dietary restrictions."

Best for: catching specific additives, with a photo fallback for products the database doesn't know yet.

Label Snob: scored against you

Label Snob is ours. It gives a 0–100 score where hard rules can only pull the score down: "seed oils cap it, trans fats and certain additives sink it." You set allergies, sensitivities, diets and goals, and each one can be a hard stop or just a flag, so the same product can score differently for two people. It also reads restaurant menus and keeps a food and macro log.

Best for: people with allergies or specific rules who want one app for groceries, menus and tracking. Not for: Android users (it's iPhone-only), or anyone who wants a fixed, universal grade to compare with other people. It's also the newest app here, with the fewest ratings.

Which food scanner app should you use?

Match the app to the question.

• "Is this nutritionally balanced?" Yuka or EWG. Both anchor on nutrition and publish their weights.
• "How processed is this?" Open Food Facts, for the NOVA group. EWG folds processing into its number as well.
• "Does it have seed oils, dyes or natural flavors?" Bobby Approved if you want its full rulebook, Trash Panda if you want the flags without the pass/fail, Label Snob if you want to choose the rules yourself.
• "Is this safe for my allergy?" Label Snob, where an allergy is a hard stop in the score. Whatever app you use, the package's own allergen statement is still the final word.
• "I want it free." Open Food Facts.
• "I'm on Android." Every app here except Label Snob.

What none of these apps can tell you

How much you eat. Every scanner grades a product, not a portion. In the same NPR report, registered dietitian Lindsay Moyer of the Center for Science in the Public Interest recommended apps that assess a food's overall nutrient content rather than single ingredients, and advised taking the results "with a grain of salt." She'd heard of people throwing out their whole pantry after a scanning session.

That's fair, and it applies to us too. A score is a fast read of a label. It isn't a diet.

Sources

1. Godoy M. Using an app to rate food for nutrition? Take the results with a grain of salt. NPR, May 26, 2025. npr.org
2. Yuka. How are food products scored? help.yuka.io; App Store listing apps.apple.com. Checked 2026-09-23.
3. Open Food Facts. Nutri-Score world.openfoodfacts.org/nutriscore; NOVA groups for food processing world.openfoodfacts.org/nova; App Store listing apps.apple.com. Checked 2026-09-23.
4. Environmental Working Group. Overall Product Score Methodology. ewg.org; App Store listing apps.apple.com. Checked 2026-09-23.
5. FlavCity. Bobby Approved standards. flavcity.com; App Store listing apps.apple.com. Checked 2026-09-23.
6. Trash Panda. FAQ trashpandaapp.com; App Store listing apps.apple.com. Checked 2026-09-23.
7. Google Play listings for Android availability: Yuka, Open Food Facts, Bobby Approved, Trash Panda. EWG states its app is on iOS and Android on the methodology page above. Checked 2026-09-23.
8. Label Snob. How we score labelsnob.app/how-we-score; App Store listing apps.apple.com.

Keep reading

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