Terms of service
Draft, last updated October 11, 2026.
Eligibility
You must be 18 or older to create an account.
Subscription and free trial
LunWise is a paid subscription. New accounts can start a 7-day free trial once. A payment method is required to start the trial. Unless you cancel before the trial ends, you will be charged $9.99 per month or $99.99 per year, depending on the plan you chose, and your subscription renews automatically each period until you cancel. Cancel any time from Settings. When you cancel, you keep access until the end of the period you've paid for.
Our promises to subscribers
Price lock. The price you subscribe at is the price you keep for as long as your subscription stays active, including renewals. If our prices change, they change only for new subscribers.
No feature downgrades. Features included in your subscription will not be moved to a higher-priced plan while you remain subscribed.
Easy cancellation. You can cancel in one tap from Settings, with no calls, chats or offers to get through. We email you before a free trial converts to a paid subscription.
Not medical advice
LunWise provides estimates based on the information you enter. It is not a medical device, does not diagnose any condition, and must not be used as contraception. Talk to a qualified clinician about your health.