Using an iPhone to take pictures is fast, easy, and fun. Using the many iPhone photo Apps makes the experience even better. Now (I hope) is a good time for App makers (at least one, I hope) to consider going way back to the beginning of photography and create an App or add to an existing App what are now called alternative photographic processes. I would love to see an App the allows me (us) to give us the same look as we got from albumen, bromoil, carbon, cyanotypes, daguerrotypes, gum bichromates, kallitypes, palladium, platinum, Polaroid lifts, and vandykes.
If you want to get those old effects, it's very time consuming, and in many cases physically dangerous to deal with the poisonous chemicals. Come on App developers, let us get back to photographic basics...please.