Short, because there isn't much to say.
There is no analytics, no advertising, no tracking pixels and no third-party scripts on any page. Nothing here follows you anywhere else.
Card details never reach this server. Payment goes through Stripe's own hosted checkout; we see a customer id and a subscription status.
For as long as your account exists. If your subscription ends, everything is kept for 90 days in case you come back, then permanently deleted.
Your account page has an export button and a delete button. Export gives you a JSON file of everything held about you. Delete cancels the subscription, removes every row across every table, deletes every image you generated, and signs you out. It is immediate and it cannot be undone.
One address, reaching a person: support@dndgadgets.com.