The Vita Mix is my second favorite appliance!
(The first is a Keurig coffee maker, but that's a whole 'nother story!!)
The Vita Mix makes juice, so it could be called a juicer, but it's a 'whole food' juicer - you throw EVERYTHING edible into it and it liquefies it, so you get the whole value of the food: fiber, vitamins, etc. With a traditional juicer, the machine removes the juice and seperates out all the pulp, which you then throw away. (Though I have a friend who uses it in baking and composting, so it can have its uses.)
I grew up with a Vita Mix - it lasted for YEARS! My mom gave it to me after I graduated from college. I ended up buying my own - the older one had a metal container and I wanted the clear one - and gave the old one to another relative.
Yes, you can throw a whole apple in, if you want to. Personally, I don't want to eat the seeds (they can have toxins in them) but that may just be my paranoia
I've made tons of smoothies, soups, sauces, and spreads and never had a bad experience. It's the BEST for slushie adult beverages, too!
They have a container with a blade that will grind grain into flour, if you're interested in that, as well.