Sorry to see you go. Defog Premium is billed through Apple, so cancellation happens in your Apple ID settings, not inside the app. It only takes a moment.
The button opens your subscription list on Apple devices. If it doesn't open, follow the steps above or see Apple's guide.
Cancelling stops future renewals. You keep Premium until the end of the period you've already paid for, then move to Free access automatically.
Still stuck? Email support@defogapp.com and we'll help.