Photomosh - Turn anything into a vaporwave
AndreaMosaic - With AndreaMosaic you can create your own photographic mosaics made with your own pictures.
Poto - Photo collage maker
Percolator - Percolator: the always fun, supremely unique photo app that is sure to surprise you! FEATURES:
A Color Story - The photo app to colourize your life
Mosaic Creator - Mosaic Creator is professional mosaic tool. You can create your own picture mosaic.