Contact tracing applications popularized during the COVID-19 pandemic have naturally led to privacy concerns among users. This study reviews problems and concerns related to privacy in these applications. The results show which of the concerns are relevant based on the problems detected. In addition, possible solutions for resolving these problems and lowering the concerns are presented. The concerns about data being shared with third parties and security weaknesses in the app designs were confirmed to be relevant. Possible solutions discussed were better communication with the public and privacy-focused app development. Although some of the concerns were confirmed to be relevant in the context of app-based contact tracing, the impact on the digital footprint of a user as a whole isn't as significant.