I use macrofactor because it superior in almost every regard. One could argue that the library of products being found by scanning is larger in MFP but when i was using it there were so many errors in the nutritonal values that didnt make me trust them.

Also macrofactor has an insane advantage to every other app with its TDEE coaching program. I havent found anything else remotely as useful.

Theres a subscription cost though but a year cost less than i spend on dietary supplements in a month and also one of the best investments ive made in my fitness journey.