AndreaMosaic - With AndreaMosaic you can create your own photographic mosaics made with your own pictures.
Percolator - Percolator: the always fun, supremely unique photo app that is sure to surprise you! FEATURES:
WidsMob Montage - Make stunning mosaic photos or montage shape with tiles, which supports both JPEG and PNG files.
Repix by Sumoing Ltd - Mosaic paint filters, bokeh effects, and more
iColorama S - Photo editor and manipulator
Color View Finder - Real time color palette from your iphone camera