Lotsa fun!
I bought this app because of the icon, and was pleasantly surprised to discover that its lots of fun. It works well on abstract images with lost of colours and contrast. Its a great way to create wallpapers for my iPhone and iPad.
The downside to Percolator is that it reduces the image size from 5 megapixels (iPhone 4) to 2 megapixels (1200 x 1600 pixels). I am assuming that it cannot preserve the original image size as it would simply be too much for the iPhones processor.
Drdul about
Percolator: Dazzling Mosaics