Freeze dried fruit comes in many varieties. Mountain House, for example, carried organic apples, organic bananas, and organic strawberries.
You can also get freeze dried pineapple, peaches, raisins, and tomatoes -- technically a fruit even though we think of them vegetables.
The most common technique for storing fruit, of course, is simply to dry it. We're used to eating raisins (dried grapes), prunes (dried plums), and dried banana chips. We may also eat snacks of strips of dried mangoes and papayas.
This process is easier and much more commonplace than freeze drying the fruit. And it generally works well.
One problem though is that such dried fruit is extremely high in sugar. It's still better than sugar snacks such as candy bars, because it retains the nutritional value of the original piece of fruit, but it still can kick up your insulin level fast if you eat a lot of it, and if you don't brush your teeth right away, it can encourage cavities and gum disease.

However, when you eat fruit that was freeze dried, you must add water to it, the same as with all the other such food. Then you get something resembling the fresh fruit. Of course it won't be quite as delicious as pulling a ripe apple off a tree and eating it right away, its juice running down your chin, but it's more filling and satisfying than a lot of gummy dried fruit.
The idea of freeze dried food and meals of course is to provide you with satisfying nutrition while you are undergoing some type of disaster or emergency: tornado, hurricane, flood, blizzard, forest fire, power outage or something similar.
Other people simply desire the convenience of having delicious, nutritious but lightweight food while they're camping, hiking, riding trail bikes, white water rafting or floating down a river.
I can remember when I was a Boy Scout. We went on short campouts, and when we spent a week at the local Boy Scout camp we still cooked our own meals, even though there was some kind of lodge where all the other Boy Scouts ate at. The scoutmaster of Troop 121 believed in cooking own own.
But that was before freeze dried technology was invented or, at least, widely applied to outdoor recreation. As a Boy Scout, I had to do things I didn't do at home, because my mother was a better cook (hey, I did outside chores such as cut the grass, rake the leaves and shovel the snow).
So if you're preparing for a campout or the end of the world as we know it, make sure you include freeze dried fruit with your meals.
Next: Freeze Dried Fruit -- fruit are great foods to freeze dry.