"Perfect CrossProcess Film For Your Photos" CrossProcess adds color and contrast to your photos by emulating the look of Cross Processing film. CrossProcess turns your ordinary iPhone shots into beautiful, one of a kind images with unique colors and contrast. Based on looks from real film stock. Features: Red Green Blue, Extreme and Basic filters emulate different film stock. Pick your favorite or use them all. Perfect Processing Technology: We studied REAL cross processed film and developed an app to emulate it perfectly. Real Film Sound FX. Process existing photos Automatically saves to your camera roll.