The Koronavilkku application has been shut down.

Thank you for participating in the fight against COVID-19!

Koronavilkku was an application produced by the Finnish Institute for Health and Welfare (THL) that allowed users to receive alerts of potential exposure to COVID-19. Users could report their COVID-19 infection anonymously to other application users.

At most, Koronavilkku had 2.5 million users. Koronavilkku was one of the most widely used COVID-19 apps in relation to the population of the country. 64,000 users reported their infection with the app. 23 % of Koronavilkku users reported having received an alert of potential exposure.

Koronavilkku no longer receives randomly generated codes or follows potential infections and you can’t use it to report your infection. The app has been permanently shut down and will from now on only feature a thank you screen. Users can delete the app from their phones. The app will not automatically be deleted from your phone.