Another week, another AI app going viral. This time around, the AI app that has surged to the top of the App Store is EPIK, an photo editing app that lets Another week, another AI app going viral. This time around, the AI app that has surged to the top of the App Store is EPIK, an photo editing app that lets users generate nostalgic, 90s-inspired "yearbook" photos of themselves as one of its many templates.