Skip to main content
Dashboard

Corona-Warn-App (CWA): Key performance indicators

Last update of the data: .
Time range:
From (dd/mm/yyyy)
To (dd/mm/yyyy)
Loading...

Downloads

Loading...
Export data
Total (Count until )

Test results provided

Loading...
Export data
Total (Count until )

Sharing behaviour

Loading...
Export data
Total (Count until )

Warnings received by data donors

Loading...
Export data
Total (Count until )

Downloads

Downloads

Count of Corona-Warn-App downloads from the Google Play Store (Android) and Apple App Store (iOS) as well as the total count of Corona-Warn-App downloads from both app stores (total).

Time intervals

Daily: Count accurate to the day
Weekly: Weekly count by calendar week (CW)
7-day moving average: 7-day moving average accurate to the day
Cumulative: Cumulative sum accurate to the day, since the beginning of the measurement

Reference date

The reference date here is the day of download according to German time.

Data sources

Apple App Store
Google Play Store

Additional information

The download count only contains the Corona-Warn-App downloads from the official Google and Apple app stores.

It is not possible to draw any conclusions regarding the count of active users from the download count.

Test results provided

Test results provided

Count of PCR test results and antigen rapid test results provided by laboratories and rapid test sites on the Corona-Warn-App server, as well as the sum of test results of both test types.

Provided test results: PCR tests

Count of positive, negative and invalid as well as the sum of all PCR test results provided by laboratories and rapid test sites on the Corona-Warn-App server.

Provided test results: Rapid antigen tests

Count of positive, negative and invalid as well as the sum of all rapid antigen test results provided by laboratories and rapid test sites on the Corona-Warn-App server.

Time intervals

Daily: Count accurate to the day
Weekly: Weekly count by calendar week (CW)
7-day moving average: 7-day moving average accurate to the day
Cumulative: Cumulative sum accurate to the day, since the beginning of the measurement

Reference date

The reference date is the day of the test submission to the test server.

Data sources

Corona-Warn-App backend

Event

DateEvent
07.04.2022Due to a data correction made retroactively for the period since August 2021, significantly fewer PCR tests are counted than previously.
25.04.2022Over the weekend of Apr. 23-24, 2022, a technical problem with a certificate prevented a large number of laboratories from submitting PCR tests.

Sharing behaviour

Sharing behaviour

Count of positive test results, for which a QR code was registered or a teleTAN requested for validation, as well as the sum of positive test results validated with either option.

Sharing behaviour: QR codes

Count of positive test results, validated through QR code registration, shared and not shared in the Corona-Warn-App.

Sharing behaviour: teleTANs

Count of positive test results, for which a teleTAN was requested for validation, shared and not shared in the Corona-Warn-App.

Time intervals

Daily: Count accurate to the day
Weekly: Weekly count by calendar week (CW)
7-day moving average: 7-day moving average accurate to the day
Cumulative: Cumulative sum accurate to the day, since the beginning of the measurement

Reference date

The reference date is the day of test registration (QR code) or of the call to the verification hotline (teleTAN).

Data sources

Corona-Warn-App backend

Retrospective adjustment of the data on sharing behaviour

The data on sharing behaviour (total, QR codes and teleTANs) is adjusted retrospectively for the last 14 days because the reference date refers to the scan date (QR code) or call date (teleTAN). The delay may occur as follows:
The user takes more time to share his or her test result. As soon as the result is shared, the number of shared results changes accordingly regarding the scan or call date.
The user already receives a QR code when making their appointment and scans it immediately, although he or she may not have the test performed until later.

Additional information

Only positive test results are relevant for ending chains of infection. To prevent abuse, positive test results must be verified. There are two options for verifying test results: a QR code or a teleTAN, which must be entered in the Corona-Warn-App. The user receives the QR code when the sample for the test is collected. By scanning the QR code, the test can be registered in the Corona-Warn-App. As soon as the result is available, it is automatically retrieved and displayed on the smartphone. The user can then decide to release her/his own random codes from the last 14 days to warn possible risk contacts. If no QR code is available or if it is lost, the user can call the verification hotline. A teleTAN is generated there to verify the positive test result. This teleTAN must be entered into the app by the user.

Warnings received by data donors

Warnings received by data donors

Count of red and green risk warnings as well as the sum of both risk warnings received by data donors in the Corona-Warn-App.

Time intervals

Daily: Count accurate to the day
Weekly: Weekly count by calendar week (CW)
7-day moving average: 7-day moving average accurate to the day
Cumulative: Cumulative sum accurate to the day, since the beginning of the measurement

Reference date

The reference date is the “submitted_at” date of the PPA dataset.

Data sources

Privacy preserving analytics (PPA)

Additional information

Users of the Corona-Warn-App have the opportunity to participate in the data donation and make an important contribution to improve the app. By voluntarily sharing selected data, users can help the Robert Koch Institute to evaluate the effectiveness of the Corona-Warn-App and improve the features and usability of the app. To be a data donor, the switch in the settings under "Share data" must be set to "On".

Users who have had a brief and/or distant encounter with a person who was tested positive for corona in the past 14 days, receive a green risk warning. This means that the encounter was assumed not to be above the defined threshold value. There is no need for specific action from the users concerned.

Users who have had long and/or close encounters with at least one person who tested positive for corona in the past 14 days, receive a red risk warning. This means that the encounter was assumed to be above the defined threshold. Affected users are asked to reduce personal contacts. In case of symptoms, they should consult a general practitioner, the medical on-call service, or the local health department. The general practitioner or the local health department will decide whether a test will be provided.

Update of the data

The CWA dashboard data is usually updated daily at 10:30 AM (CET) for the previous day. Data regarding downloads is updated only on working days. On Mondays, the data for Friday, Saturday and Sunday are updated.

Further dashboards