There is also an app available on F-Droid, see link below. I frequently use it to scan the food on my table and I am surprised sometimes about the good or bad food quality.
> The package name on the Play Store is org.openfoodfacts.scanner. For historic reasons, it's openfoodfacts.github.scrachx.openfood in the code and on F-Droid.
There's also an app on the Play/App stores (so not open source), which is better in that it does scoring (better than the nutriscore) based on the OpenFoodFacts data, proposes better alternatives, and also handles cosmetics, called Yuka.
> The package name on the Play Store is org.openfoodfacts.scanner. For historic reasons, it's openfoodfacts.github.scrachx.openfood in the code and on F-Droid.
(quoting from the app project's readme at https://github.com/openfoodfacts/openfoodfacts-androidapp/)