Public Perception of the German COVID-19 Contact-Tracing App Corona-Warn-App
Felix Beierle, Uttam Dhakal, Caroline Cohrdes, Sophie Eicher,, R\"udiger Pryss

TL;DR
This study analyzes public perception of Germany's Corona-Warn-App during COVID-19 by examining app reviews and tweets, revealing technical issues and widespread promotion on social media.
Contribution
It provides a comprehensive analysis of user feedback and social media discourse to understand public perception of the contact-tracing app.
Findings
Technical issues are common in app reviews.
Twitter largely reports and promotes app adoption.
Public perception is influenced by technical and social factors.
Abstract
Several governments introduced or promoted the use of contact-tracing apps during the ongoing COVID-19 pandemic. In Germany, the related app is called Corona-Warn-App, and by end of 2020, it had 22.8 million downloads. Contact tracing is a promising approach for containing the spread of the novel coronavirus. It is only effective if there is a large user base, which brings new challenges like app users unfamiliar with using smartphones or apps. As Corona-Warn-App is voluntary to use, reaching many users and gaining a positive public perception is crucial for its effectiveness. Based on app reviews and tweets, we are analyzing the public perception of Corona-Warn-App. We collected and analyzed all 78,963 app reviews for the Android and iOS versions from release (June 2020) to beginning of February 2021, as well as all original tweets until February 2021 containing #CoronaWarnApp…
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