A mobile application designed to help Danish consumers avoid purchasing American-made products is surging in popularity as anti-US sentiment rises in Denmark following the US's controversial interest in acquiring Greenland. The app, called UdenUSA ("Without USA"), was developed by 21-year-old Jonas Pipper and his friend Malthe Hensberg. The creators say the app responds to growing demand from consumers who wish to avoid US-made goods but struggle to identify product origins in supermarkets.