"It is different every time."

Translation: 그때 그때 달라요.

[nleconte]

그때 : that time
다르다 : To be different

So it means it is different each time, or shorter, it depends.

It's a pretty common expression, to remember as is.

-Do you like chocolate or vanilla icecream?
-It depends. 그때 그때 달라요.

[SvedishPlumber]

I feel like "it depends" does not mean the same thing as "it is different every time" at all

[PaulJones279857]

It's not english. Different languages use different constructions to provide communication functions.

[RQZ.Sash]

매번 달라요 should be accepted, unless the context is explicitly disclosed.