I use this[0] on fDroid. And there's a fork[1] you can build from source with macros. It's minimal and pulls from the OpenFoodFacts db. No profile and zero mothership.

OpenFoodFacts supports barcodes, but it hasn't been implemented here yet, but this still works for my needs.

[0]: https://github.com/SecUSo/privacy-friendly-food-tracker

[1]: https://github.com/SecUSo/privacy-friendly-food-tracker/pull...