In Settings. On a trial, the cancel button sits on the trial card itself. On a paid plan, the billing section opens Paddle's portal — Paddle handles Víkingur's billing, so the cancellation happens on the authoritative side.
Cancel during the trial and the card is never charged. There is no minimum term.
What you learned stays yours: a lapsed account keeps its words, badges and history readable, and resubscribing picks up exactly where you stopped.