Sometimes the food is right and the numbers are not. A database entry can be out of date, a label can be misread, an AI estimate can simply be wrong. You can correct any of it, before or after logging.
Correcting the values
1. Open the food, either a search result before you log it, or an entry already on a meal card.
2. Tap Edit nutritional values.
3. Change any of the figures: calories, carbohydrate, protein, fat, saturated fat, sugar, fiber and salt. Everything except calories is in grams.
4. Tap Save changes. You will see "Entry updated" and the day's totals move with it.
What an edit affects
Only your own log. You are not correcting Open Food Facts for everyone else, and nothing you change here is published anywhere. The app is explicit about this on the edit screen for a reason: people hesitate to correct a shared database, and this is not one.
A corrected food becomes one of your saved foods. Next time you search for it, your version comes back marked as edited, and it ranks above the source you corrected. Fixing a food you eat weekly is a few seconds spent once.
When it is worth doing
- The result carries a low confidence badge, or a note that the sources disagreed.
- The figures do not match the package in your hand. Believe the package.
- A meal estimate missed the cooking fat, which it usually does.
- You make the recipe yourself and know it better than any database does.
Editing versus changing the serving
These are different jobs and it is worth keeping them apart. If you ate more than the app assumed, change the serving. The per-serving nutrition is fine. Only edit the values when the nutrition itself is wrong for the amount stated. Editing the calories to account for a bigger portion works, but it corrupts the food for every future use of it.
Removing an entry instead
If the whole entry is wrong, delete it rather than editing it into something else. Swipe the food on its meal card and choose Delete. You are asked to confirm, and it cannot be undone, but nothing stops you logging the right thing straight afterwards.