LAPLACE Cycles

LAPLACE Cycles keeps track of menstrual cycles for the people you care for, all in one place: yourself, a partner, a daughter, or anyone who asks for your help. Give each person a profile, log their periods, and see where each cycle is today and when the next period is estimated. A PROFILE FOR EACH PERSON • Add a background photo to any profile. • Cards show each profile's cycle day, current phase, and estimated next period. • Pin the profiles you check most, and sort by next period, next ovulation window, name, or recently added. • Set a typical cycle and period length for each profile. Estimates adapt as periods are logged. LOGGED PERIODS AND ESTIMATES, KEPT APART • Log the first day of a period and how many days it lasted, then edit or delete any record later. • Estimates use recent cycle lengths. Unusually long gaps, which may be missed logs, are left out. • See the estimated next period and an approximate ovulation window for each profile. • Periods you log are marked as logged. Uncertain estimates are faded and explained, for example when history is limited or a period may not have been logged. ONE CALENDAR FOR EVERYONE • Colored dots show the profiles' phases on every day of the month. • Select a day to see everyone's details, or filter the calendar to one person. REMINDERS, ONLY IF YOU WANT THEM • Upcoming Period: a reminder 1 to 3 days before a profile's estimated period. • Check-In: one gentle reminder 3 days after the estimated date if no new period has been logged. • Reminders are off for every profile until you turn them on. Choose the delivery time, and combine each day's reminders into one notification. • Notifications hide names and cycle details unless you turn on Show Details in Notifications. ON APPLE WATCH • See each profile's card, estimates, and recent history. • Log or edit a period and pin profiles from your wrist. Profiles sync from iPhone through iCloud. SHARE ONLY WHAT YOU CHOOSE • Copy a summary, or share it as text or an image, for the profiles and day you pick. Nothing is shared unless you share it. PRIVATE BY DESIGN • Profiles and period history are saved on your devices and sync through your own iCloud account. There's no LAPLACE account, and LAPLACE never receives your data. • No ads, no analytics, no third-party SDKs. • Location and other metadata are removed from photos before they're saved. • Only add another person's information with their permission. MADE TO FIT • English, Simplified Chinese, and Traditional Chinese, switchable in the app. • Dynamic Type and Dark Mode, on iPhone and iPad, in portrait and landscape. FREE FOR UP TO FIVE PROFILES Track up to five profiles for free. Unlimited Profiles is a one-time in-app purchase that removes the limit. No subscription. If a purchase is refunded, existing profiles stay available. ABOUT ESTIMATES Cycle and ovulation dates are estimates, not medical advice, and shouldn't be used for birth control. LAPLACE Cycles doesn't diagnose conditions or confirm ovulation. Talk to a doctor about any health concerns and before making medical decisions. REQUIREMENTS • iOS 18 or later on iPhone or iPad. The Apple Watch app requires watchOS 11 or later and the iPhone app. • Syncing between devices requires iCloud, signed in with the same Apple Account on each device. Without iCloud, data stays on the device.