Cancel any time, from inside the app.
Open Billing in the app and choose Cancel plan. Your paid plan stays active until the end of the current period; then your workspace returns to Free with everything intact. No calls, no forms, no notice period.
Renewal is never silent: the plan page shows the next renewal date at all times, and the Razorpay mandate can also be stopped from your bank or UPI app.
To close your workspace entirely, open Settings → Close this business; it happens immediately and cancels your subscription with it. See Delete your account for exactly what goes and what we have to keep.