If you want to have insights on your data stored by Jodel, please follow these steps on how to request your data-package:
Open the Contact Us-page in the app
Tap on Help with my account > Data request
Follow the instructions and wait for your package
After receiving your request, it might take up to 30 days in order to have every information ready. After everything has been set up, you will receive a link to a .zip-data and a password in order to download and open it.
If you want to bridge waiting time, you also have access to some data within the app already (this includes your Jodels and comments, year of birth, gender & occupation and other settings).