You are in control of the all the data that you create in the Me app.
You can delete it at any time by deleting your user account. Therefore follow these instructions:
If you have already deleted the Me App from your device and have used certain functions that require data to be processed or stored on servers of Clarity UG or our partners, you can arrange for this data to be deleted by providing us with your random account ID. Please send us an email to knowyourself.meapp@gmail.com so that we can arrange for the deletion.
Also note: If you made any encrypted backups of your data, they need to be deleted manually by yourself.