European consumers are fighting back against the U.S. following Trump’s threats to take control of Greenland, a Danish territory. As a result, two mobile apps that offer a way to determine if products are made in America, then suggest local alternatives, have surged to the top of the Danish App Store in recent days.

The boost in downloads comes as Danish consumers have been organizing a grassroots boycott of American-made products, which also included canceling their U.S. vacations and ditching their subscriptions to U.S.-based streaming services, like Netflix.

Across both iOS and Android, two apps, NonUSA and Made O’Meter, have entered the top 10 this month, according to new data from market intelligence provider Appfigures.