HerRhythm: Period Tracker

About

Understand your rhythm. Plan with confidence. HerRhythm is a calm, private period, cycle, ovulation and fertility tracker — built on one promise: your most personal health data never leaves your iPhone. PRIVATE BY DESIGN • No account, no email, no phone number required • All health records stay on your device — there is no cloud health server • No third-party analytics or tracking SDKs • App Lock hides the app behind Face ID • Your cycle data is never used for advertising • Export everything (PDF/CSV) or delete it all, any time MADE FOR FAMILIES HerRhythm is managed by you, an adult. You can add a gentle profile for your daughter (age 10+) — she never needs a phone, email, password or account, and her profile never shows advertisements. Record her first period when it comes, and the app shifts from soft preparation guidance to simple early-cycle tracking, always in reassuring language written for you as her parent. HONEST PREDICTIONS • Period estimates shown as a date range with clear confidence — never false certainty • A transparent, on-device calculation you can read about in plain language • Fertile-window and ovulation estimates for adults who want them • Estimates are informational only and must never be used as contraception A CALENDAR THAT TELLS THE TRUTH Recorded days, predicted days, fertile estimates and logged symptoms each look different — you always know what's fact and what's estimate. GENTLE, USEFUL INSIGHTS Cycle length trends, symptom patterns and plain-language summaries appear once there's enough data to be meaningful. No alarm, no diagnosis — just your own picture, clearly told. LEARN, AT THE RIGHT AGE A library of calm, plain-language articles — first periods, cycle basics, fertility awareness, perimenopause — filtered to each profile's age and life stage. WORKS WITH APPLE HEALTH (OPTIONAL) Sync your own cycle history with Apple Health if you choose. You control reading and writing separately, and predictions are never written as facts. HERRHYTHM PLUS (OPTIONAL SUBSCRIPTION) An optional monthly subscription that adds exactly three things: no advertisements, up to five family profiles instead of two, and the doctor-visit report — a printable summary of your logged cycles to take to an appointment. New subscribers can try it free for 7 days. Core tracking, all safety information, your full data export and every privacy setting are always free. IMPORTANT HerRhythm provides informational estimates only. It does not diagnose medical conditions, and fertility estimates must not be used as contraception. For medical questions, please consult a healthcare professional. Privacy policy: https://savedelete.com/apps/herrhythm/privacy Terms of Use: https://savedelete.com/apps/herrhythm/terms