BIG SHOW allows you to enlarge an image to become the maximum screen size.
For instance, you can zoom up an eye on a portrait image to check the details. Or, in a landscape photo, you can even read the texts on a distant sign as if you see it through binoculars.

Why don't you zoom up your favorite pictures and enjoy watching the details on the beautiful iPhone or iPad display?
You may discover something you didn't notice before.