From 22 April 2022, the CoronaMelder app has been discontinued. This page will no longer be updated.
The CoronaMelder app was developed in 2020 to prevent the spread of the coronavirus. The app sent users a warning if they had been in the vicinity of someone who tested positive for an extended period of time.
Many measures were relieved in February 2022. That is why the use of the CoronaMelder has been greatly reduced. The app was deactived since 22 April 2022 and can be reactivated if the virus spreads again.
Will not be updated anymore.
Number of people who alerted others via CoronaMelder:
50 less than the previous value
This number shows how many CoronaMelder users who tested positive alerted other app users of this yesterday.
5,864,547 people have downloaded CoronaMelder.
It was investigated how CoronaMelder worked in practice. The latest information about this can be found on the website of the CoronaMelder app.
More information about the CoronaMelder app
Warnings over time
This graph shows how many users with a confirmed case of COVID-19 have informed other users of CoronaMelder of this.
The map shows "Show all"
The map shows "Last 30 days"
The map shows "Last 3 months"
The map shows "Last 6 months"
The map shows "Last year"
This graph shows how many users with a confirmed case of COVID-19 have informed other users of CoronaMelder of this. Use the keyboard to navigate through the time in the graph. With the left and right arrow keys you can move backwards and forwards in time. Use the left angle bracket < to go back and the right angle bracket > to go forward. With page-up and page-down you make bigger steps. Use the Home key and End key to go to the beginning and end of the timeline.