How to make photos doubled/split like this? Effects / iphone apps?

How can i make doubled pictures or like the ones where you have oe picture of yourself, then the same one again is next to it but only like 1/4 of the picture? Ya knowww? Any apps which have different things like this on them

eg

image

image

Added (1). also like this, ESPECIALLY LIKE THIS: http://instagram.com/...6wai_qs97/ and http://instagram.com/...P0DkuKs_2/ how do i do this?

I use piclay & splitshape

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