ahh you must watch out for the "[fruit] juice" vs "[fruit] juice drink" meme

on the packet somewhere, it will specify, for the example of your case, "apple juice", or "apple juice drink"

anything that is a "juice drink" is just not the good stuff. a "juice drink" can have basically anything they want in there, with some 0.0001% real fruit to cover themselves legally. always look out for "juice" on it's own, that's the 100% real stuff

i say this because i got bitten by buying the cheapest apple "juice" once, to find out it was a "juice drink", i.e not apple juice.