Change your plan

Go to Settings → Billing → Plan.

• Upgrade — takes effect immediately. You're charged a prorated amount for the remainder of the billing period.
• Downgrade — takes effect at the end of your current billing period. Until then, you keep current-plan features.
• Cancel — you keep access until the end of the current period. After that, you can still log in to view your data, but most features are read-only.

Annual plans give you 2 months free. You can switch monthly ↔ annual at any time.