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Stop Corona logo
Stopp Corona

Important: The development has stopped with 28.02.2022

AboutImportant checklist to make project buildableDownloadLicense


The Stopp Corona project is an open source project for bluetooth based contact tracing deployed by the Austrian Red Cross in Austria. For developers interested in contributing, other organizations interested in joining forces please have a look at the following documents:

Stopp Corona helps you to keep track of encounters with friends, family or co-workers and save them anonymously. Should you contract the corona virus (to be precise: the COVID-19 disease caused by the SARS-CoV-2 virus) all your encounters of the last 48 hours will be informed automatically and anonymously. And vice versa of course. You too will be notified instantly and anonymously should one of your saved encounters report to have contracted the virus. Helping all of you to take appropriate measures such as.

  • Keep a safe distance (12 meters) from others
  • Avoid social contacts
  • Self-quarantine as a precaution

Together we can break the chain of infection. Not only by protecting ourselves, but also by preventing others from being infected.

Say hello with a digital handshake. It will definitely be a while before we'll actually shake each others hands again. In the meantime: use Stopp Corona's digital handshake. If you and the person you encounter have installed the app, you can simply select each other. The app will anonymously save your meeting. Should one of you fall sick with the corona virus the other will receive an instant notification.

Self-check your corona status

How are you feeling today? Just answer the clinically proven questionnaire to check yourself for corona symptoms daily.

Report suspected infections

Should your symptoms match those of a corona infection, you can choose to inform your encounters. This is extremely important so stop the virus from spreading. Everyone you saved in the last 48 hours will get an anonymous notification. So don't you worry: your personal data is safe with us. If you suspect to have contracted the corona virus, please stay at home and contact your attending physician via telephone. If that is not possible, call the Corona-Hotline 1450. Please do not visit your doctors office or a hospital in person!

Medical confirmation

If you are officially tested for the corona virus and your test comes back positive, please notify your encounters immediately. Of course the notification will also be anonymous. This app was developed in cooperation with the UNIQA foundation. App concept and implementation was created with the support of Accenture Austria. Care for you. Care for me. That's how we protect ourselves.

Checklist to make project buildable

  1. Add your own HOSTNAME, BASE_URL, HOSTNAME_TAN, BASE_URL_TAN, HOSTNAME_CDN, BASE_URL_CDN and potentially other buildConfigFields as shown in the app/build.gradle


You can download application from Play store.

Get it on Google Play


This code is distributed under the GNU Affero General Public License version 3. See the LICENSE.txt file for more info.

Notices for third party libraries in this repository are contained in NOTICE.txt.