Decim8 is an app which destroyes photos on multiple ways. I use it to create material for to process with other apps. Here some Decim8 photos.
The following pictures demonstrate the funktion of the iPhone app Diptic. Diptic gives You the possibility to make collages of several pictures. The app provides a set of square sheets, to load two, three or four pictures into one frame. You can resize, rotate and mirror the pictures and it is possible to adjust brightness, saturation and contrast for each picture. You can give a border to the sheet and adjust it’s colour and size (size 0 make no border).
Export functions: Mail and Save to Photo on iPhone. Picture sizes: 1024×1024 px or in high resolution 2048×2048 px
The raw app has only square frames. Price 1.59 €
In app purchasing gives the posibility to buy and extend the app for panorama-frames, 3:2, 4:3 and else between.