Hi natural,
have you ever heard the euphemism 'tired and emotional' used to describe somebody who is completely tanked?
Well, the euphemisms 'purple apple berry' and 'climbing blueberry' are far, far more linguistically generous than that one will ever be.
In a word, no; it doesn't taste anything like apple or blueberry. The consistency is somewhat like apple.
This is a Tasmanian species which is mostly ornamental. Yes, you can eat it--the question is, would you really want to? They have a mealy turpy taste which can be acrid. I believe they are cooked more than they are eaten fresh.
s