Period Tracker: Private Log

Your cycle, kept private. Track periods, symptoms and moods on-device — no account, encrypted, never sold. Clear predictions that show their work.

Period Tracker is a calm, private way to understand your cycle — built so your most personal data never leaves your phone.

PRIVATE BY DESIGN • Everything you log is encrypted on your device. • No account. No sign-up. No cloud. • We can't read your data — not even us. • Delete everything in one tap, anytime.

TRACK IN SECONDS • Log your period, flow, symptoms, and moods — your way. • Three logging styles: quick, step-by-step, or all-at-once. • A clean calendar shows your period, fertile window and ovulation.

PREDICTIONS YOU CAN UNDERSTAND • See your next period with an honest confidence range — never false certainty. • Tap "why" to see exactly how a prediction was made. • Built to handle irregular cycles, PCOS and perimenopause without pretending every cycle is 28 days.

INSIGHTS, ON YOUR DEVICE • Average cycle and period length, variability, and your recent cycles. • Spot your most common symptoms. • All computed locally — nothing is uploaded.

GENTLE REMINDERS • Optional, on-device reminders before your period or to log your day. • Discreet by default — no cycle details on your lock screen.

PEACE OF MIND • Optional Face ID / Touch ID app lock. • No ads, ever.

Period Tracker is for tracking and education. It is not a medical device and does not provide medical advice or contraception guidance.