Photo Sorting App: Clean Up Your Gallery With One Swipe Photo Sorting App turns a messy camera roll into a quick, calm routine. Swipe left to delete, swipe right to keep, then move on to the next picture. No menus, no tutorials, no endless grid of thumbnails. Looking for a sorting app for photos that does not feel like homework? This one shows a single picture at a time, so every decision takes a second. Your storage gets lighter with each swipe.