If you are freezing, dehydrating, or canning apples, buy one it truly is worth it. If you can't buy one, borrow one.... really, it saves a ton of time.
Mine is a Pampered Chef Version. But there are others on the market too.
If you are making apple sauce or apple butter this tool makes peeling coring and slicing easy.
Stick your apple on the prongs.
Crank the handle and the peels come of in long strips while the blade is slicing and coring the apple.
My kids love to help and think it is fun to eat an apple in curly Q's.
I also use mine to slice potatoes. Stick your potato on lengthwise just like an apple. Slice. Your potato will be sliced into curly cues just like the apples above. They will also leave the "core" of the potato.
Pprinkle your potato curly-Q's with salt or seasoning, roast them in the oven and make curly fries. You can bake the "cores" at the same time.
Or slip them in a fry daddy and deep fry.