Left? Or Right?

Have you ever had the problem when sending two pictures to someone and ask which is better.
You get the answer the first or the second, but then you yourself can't seem to remember which picture you send first...

This is where "Left? Or Right?" comes to the rescue. The main function of this application is combining those two pictures into on big one.
In that newly combined picture, the choice is now simplified into the "Left" one or the "Right" one?