Draw and send image

Hello, I want a program that will allow me to add a picture of the markers in the form of "X" (PNG format). The program should be able to: - With one click on the image to place the marker "X" in the location of the finger. - Can send the image via email. => I have the original image, and with one or multi click, the program add some markers to the image (the image's add is an other small image PNG). The program should be with xcode, and work for iphone and ipad. Thanks ;)