PearPetal

PearPetal keeps your menstrual and fertility cycle on your own devices - no accounts, no servers, no cloud. Your full log lives only on the phones you own, and you choose exactly what a partner sees. Your cycle blooms on a signature petal dial: a flower that furls and opens as you move through your cycle.

Features The petal dial - a living flower that tracks your phase across the cycle at a glance, plus a month calendar view On-device predictions - your next period, fertile window and ovulation are computed on your phone from your own history, and never sent anywhere Log what matters - period start and flow, symptoms, mood, notes, and basal body temperature (BBT) Goal-aware - general tracking, trying to conceive, avoiding, or a dedicated pregnancy mode; the goal tunes the guidance you see Made for your body - enter conditions (like PCOS, endometriosis or thyroid) or birth control and the predictions adjust Scoped, consented partner sharing - give a partner a read-only view of exactly what you choose (cycle phase only, your fertile window, or your full cycle), and end it any time Gentle reminders - optional local notifications for your period or fertile days, with a discreet mode that hides the wording on your lock screen Backups you control - export an optionally password-encrypted backup file to move to a new phone; nothing is ever uploaded Five flowers - pick the species that blooms on your dial No accounts - your identity is a cryptographic key pair generated on your device; nothing is tied to an email or phone number No data collection - PeerLoom, Google, Apple, and no third party ever sees your cycle