I have been experimenting with iPhone-ography. I think I made this word up, but you never know.
Finally, if you like Holga, here is Helga...the App is called CameraBag.
The song for this post is by Christine Kane, it's called Times Three, just because.
A bonus link, 10 Must Have Apps for iPhone Photography.
When I am not experimenting with my photos, I am designing iPhone cases for my shop A Word of Inspiration.