This dataset contains all postings of the social media app Jodel that were published in the app's Corona channel in the German cities of Munich, Bonn, Rostock and Dresden within the period of March 3, 2020 to February 13, 2021. By examining the Corona channel, a relation of the postings to the topic of COVID-19 is given. For each posting, the following additional information is available in the data set: Post ID, publication time, channel, city, country, hashtags, downvotes, upvotes, replies, and shares. Jodel was released in Germany in 2014. The app allows users to publish anonymous postings that are displayed to users within a radius of about 10 km. The postings can be short messages, photos or videos. Users have the option to upvote or downvote postings published in the feed, comment on them, or share them outside the app.