Cropping an object out of an photo in an image editor can be a tricky task, but Clipping Magic is a new webapp that does it for you in seconds. All you have to do is paint the foreground object one ...

One of the coolest features of Photoshop for iOS is the "Scribble Select" tool. You draw a fat green line around any object you want to keep, and scribble some red into the parts you want to delete.