Anticrop really works like magic. What it does is take a photo that you have, preferably an outdoor photo, and expand the background of the picture. So let's say you have a photo of a rock on a beach, the app can create "more beach" around that rock, in a seamless and very easy way.
All you do to use the app is just choose a photo and then drag the borders of the photo according to how you want the background to expand (you may want to expand just the top of the photo, the right, all 4 sides...). The app just magically fills in the blanks and generates an extension of your photo.
If you do this on proper photos, like scenery shots, or a photo of a person or object somewhere outdoors, the results are jaw-dropping. You won't believe how good it works.
Don't try to use AntiCrop to complete unpredictable picture areas like human faces or other objects since the application was not designed for these kinds of tasks (actually if you insist, you can try and see what happen...)
Anticrop is a universal app so you can use it on both your iPhone and your iPad and it only costs $0.99.
Here's a short video on how to use the app. What you see is exactly what it's like actually using the app, it's that simple: