Excepting information that the user chooses to send via email, the developer (Earnest Fox) does not knowingly gather personal data about users.
Emails sent to the developer by the user ( e.g. to support@earnestfox.com ) - and any data contained within those emails - may be retained for the following purposes:
Earnest Fox will not retain or distribute the information for any other purpose ( except where required by law ).
Some previous versions of Earnest Fox apps ( released prior to 2021 and now discontinued ) used Google Admob SDK to show advertising to users. Warning is given that the advertising services might ( as far as the developer is aware ) track and record the user's activity and personal data. Users need to consult Google's privacy policies for clarification about that:
https://policies.google.com/privacy
https://policies.google.com/technologies/partner-sites?hl=en-GB&gl=uk