The iPhone Diva is hooked on collaging. Here are some random collages using either Collage or Montage to combine a series of images, or the same image resized over and over. Other apps used to enhance the final image are listed with each photo.
Picmix was used to layer color and black and white image and repaint the color back in in this shot combining prismatic view of Mono Lake tufas with a butterfly. Don't ask why, I just felt like it.
This is one of my favorite trees. I photograph it over and over. (It's on Papohaku Beach on the island of Molokai). Each tree image was worked in a number of apps, including Vihgo, Camera Bag, and Photogene. There may be others I can't remember.
At last, a simple one. Various rose images, turned black and white with tiffen's photofx. The sepia tone and edges are from the Burnt Paper filter in Art Camera app.
A multitude of butterflies, some inverted in Art Camera. Final touch was the Picasso filter in Art Camera app. That's my story and I'm sticking to it.