Percolator - Percolator: the always fun, supremely unique photo app that is sure to surprise you! FEATURES:
AndreaMosaic - With AndreaMosaic you can create your own photographic mosaics made with your own pictures.
WidsMob Montage - Make stunning mosaic photos or montage shape with tiles, which supports both JPEG and PNG files.
iColorama S - Photo editor and manipulator
Mosaic Creator - Mosaic Creator is professional mosaic tool. You can create your own picture mosaic.
Trigraphy - Photo editing app that allows you to make mosaic/abstract looking art.