The free plan isn't a trial. It doesn't expire and it never asks for a card. If you want the correlation analysis and the AI features, that part costs $2.99 a month.
No card, no expiry.
Everything in Free, plus:
You keep everything, at no cost, permanently. The old version of this page said that if the pricing ever changed you'd hear about it directly instead of running into a paywall. That still holds. Every account that existed before Premium launched has full access.
Nothing gets deleted. Your history stays where it is, your CSV export keeps working, and the free plan keeps running. You lose the deeper analysis and the PDF report until you come back, and that's it. There's no lock-in, which is why getting your own data out is on the free plan and not this one.
The AI features cost me money every time somebody uses them, and that adds up in a way the rest of the app doesn't. Charging for those, and for the analysis that took the longest to get right, is what pays for the free plan and keeps me building this. My read is that's a better trade than ads or selling data, neither of which is happening here.
One button in your profile settings, which opens Stripe's billing page. Change your card, download invoices, or cancel outright. If you cancel, you keep Premium until the period you already paid for runs out.