WidsMob Montage - Make stunning mosaic photos or montage shape with tiles, which supports both JPEG and PNG files.
PatternPad - Create beautiful geometric patterns
Mosaic Creator - Mosaic Creator is professional mosaic tool. You can create your own picture mosaic.
MagicPattern - The best design toolbox with 10+ tools for anyone
AndreaMosaic - With AndreaMosaic you can create your own photographic mosaics made with your own pictures.
GeometriCam - Photo mosaic/shape mosaic app