I just love Appletini's me and the girls drink them when we go out. It contains vodka and an apple liquer or juice.
I had one before but maybe the bartender didn't make it right was a little tart or is that the taste for it.
That is quite possible. You have to shake or stir the ingredients and then strain into the glass.
That may have been the problem but I'm more of a daiquiri girl mixed with some Ciroc lol or a good Margarita. 
I do like those too, made with rum and lime juice, with a little sugar.