Just when I thought there couldn't be another incredible iPhone app to try another one arrives in my life. And to think that decades ago when I wanted to layer images I either had to run a roll of film through the camera more than one time in the hopes at least one image would blend with another one to make an interesting photo. Or, in the darkroom occasionally 2 images placed in the negative holder could be printed together. Or, if one was lucky to have access to a darkroom with multiple enlargers where photo paper could be printed on multiple times before being immersed in chemicals. . . Phew! Not only was it a lot of work but more often than not the result was one of frustration rather than success. Now one can layer multiple images with software programs such as PhotoShop. I'm still blown away that the iPhone has the same capability as PS does and in some ways is easier and more satisfying to use.
"Creativity is allowing yourself to make mistakes. Art is knowing which ones to keep". Scott Adams