What happens when the 30-day trial ends?

When the 30 days end, your account moves to the Free plan unless you’ve chosen and paid for a plan, and nothing is charged. Nothing is deleted on day 31: your circles, scores, and history stay, including the people above the Free plan’s 50. Sparks you bought and the 10 from signup stay available, and the trial’s 40 Sparks don’t carry over.