What are the APIs for product barcodes?

Question

API

I'll repeat the old question a little: Are there services that provide food composition and other information via APi in the ru language?
But there isn't much of an answer. There are such mobs. applications like myfitnesspal, runtastic balance or lifesum, etc. where you can scan a barcode and get calories, protein, fat... I want to get an API for their database, or something like that. Some even provide api, but apparently only to companies. Or just for money, which seems unfair to me, because their base doesn’t even know all the products even in my refrigerator, and I help them, each time entering the values.
And another question, is it possible to take any of the listed applications, decompile it and find in the code the algorithm that the application uses to access its database? I already tried to decompile, the runtastic does not want to at all, and lifesam is decompiled, but I really can’t find anything there, as if not all the code is visible. It seems that getting normal access to a good database is not realistic at all, but in the applications themselves - I don’t want to use

Answer 1

If you think that access should be free, then create your own database and give out free access.
There are ready-made databases in binary format on torrents. You only need to download and parse.