How to add red line effect to photos?

There's an iPhone app for adding this red line effect to photos.( image ). Can someone say its name for me please?

Looks like a lens flare.
This app or something similar may help:
https://itunes.apple.com/...18259?mt=8

I have to wonder why flaws in images are so attractive to those who do not have expereince in shooting with film

That flaw is caused by a faulty camera back that is letting light leak into the film, causing the orange fogging.

I guess you could mimic that flaw by controlling the amount of light leaking on to the film and then once the film is developed and burned to a CD, use some of those frames to sandwich with your existing images, but for what reason, messing up a perfectly fine image?

If an app for your iPhone does not exist, maybe it is time that my son starts writing some. Apps will all the flaws typical of damaged or poorly constructed cameras or resulted when the user of the camera accidently makes other mistakes that they seem to like a lot.