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CoronaWarnApp and Aarogya Setu

I live in two worlds, Germany and India. Well at least mentally, even though I am physically in Germany during the pandemic. My world also involves people who send me news and information about the situation in India i.e. friends & family, and I have to keep track of the situation in Germany because I live here. From a technology designer perspective, this is fascinating to see how the two platforms can be visibly compared and interpreted.

The National Contact Tracing Apps

India: Aarogya Setu App: How does it work? [English]
Germany: How does the Corona-Warn-App work and what does it do? [English]

CoronaWarnApp (translated) usage statistics – as per the document (errors in translation possible, please refer to original document for accurate information).
Number of Downloads: 22.8 Million as of 19.11.2020.

“In the period from September 1 to November 18, 2020 – 127,190 positive test results have been verified – via QR Code or teleTAN – this is the number of potentially divisible positive results. Subsequently, 70,631, i.e. 56 percent of users decided to test their positive test result with share it with the other users. Only in this way can risk notification be sent to users with whom the Corona-positive person had epidemiologically relevant encounters.

Since the launch of the Corona-Warn-App, a total of 74,552 users shared their positive test result – approximately 74 percent of them (or 54,804 users) in the last four weeks (21.10. to 18.11.2020). The 7-day mean value related to the number of users who daily share their positive results, is 2,050 people. Status: November 19, 2020.” Source: CoronaWarnApp

Open Source Technology & Governance

India has OpenForge (National eGovernance Division) and Germany has Open Government Deutschland portal. The code base and open source community driven initiatives and engagement of both countries vary significantly.

For India:

For Germany:


If you listen to the video on how both apps work, the underlying utility or purpose of the contact tracing app are similar. Both apps are meant to help the state respond and manage the pandemic and service their citizens.

  • India: The app is secure and only the government can view your personally identifiable information that you share voluntarily.
  • Germany: The app is secure and never asks for any personally identifiable information, so noone (you, government, others etc.) possibly has any way to identify you.
  • India: Uses native platforms capabilities on iOS, Android and KaiOS using Bluetooth and GPS to share movement (using device location), contacts and other information over the internet.
  • Germany: Uses the Apple-Google’s exposure API on the respective Android and iOS native apps that do not save the user’s location information.
  • India: Has personalised risk assessment and services available for it’s users as additional features along with information, videos and e-services like travel pass.
  • Germany: Communicates tracing information between multiple partner EU countries through free data-sharing agreements for users.


If you would like to cite this page here is a suggested citation as part of ISSN 2700-290X:

Kumar, A. (2020) “CoronaWarnApp and Aarogya Setu” In Rural Human Review, #10, November. Muenster: Rural Human Review. Retrieved month dd, yyyy from

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