PrivatePeriod Tracker

PrivatePeriod Tracker is a privacy-first period, cycle, and ovulation tracker that keeps 100% of your health data on your device. No account, no sign-up, no ads, no telemetry, and no third-party data sharing — ever. Your body is your business. Track your period, symptoms, mood, and fertility in seconds and get clear, honest predictions for your next period, fertile window, and ovulation — all computed locally on your phone. WHY PRIVATEPERIOD TRACKER • Local-first: all core tracking, predictions, and insights work with no internet and no account. • No ads. No data sale. No hidden trackers. No third-party SDKs. • Transparent predictions that are honest about uncertainty — never fake precision. • Free forever for core tracking. TRACK EVERYTHING THAT MATTERS • Period flow (light, medium, heavy, clots) with start/end logging. • Symptoms: cramps, headache, tender breasts, bloating, fatigue, acne, backache, nausea, hot flashes and more. • Mood and feelings, energy, sleep, cravings, digestion. • Vaginal discharge, sexual activity and drive. • Measurements: BBT, weight, water, sleep hours; LH and pregnancy tests. SMART, HONEST PREDICTIONS • Next period date with a prediction window. • Fertile window and estimated ovulation day. • Cycle phase and prediction confidence. • Irregular-cycle and delay handling that explains itself instead of silently guessing. SEE YOUR PATTERNS • Full cycle calendar with legend at a glance. • Cycle history and averages. • Basic insights into your body's patterns. MODES FOR EVERY LIFE STAGE • Cycle tracking. • Trying to conceive. • Pregnancy (gestational age, due-date countdown, weekly summary). • Perimenopause (symptom logging and irregularity view). PRIVACY BUILT IN, NOT BOLTED ON • Your data never leaves your device by default. • App lock to keep entries private. • Full data ownership: export to JSON/CSV/TXT, local backup and restore, and one-tap delete-all. • Optional Health Connect (local) and a home-screen cycle widget. Optional connected features (content library, community, partner sharing, multi-device sync) are always off by default, opt-in, and end-to-end encrypted when enabled. You are never tracked to be sold to. Upgrade any time to PrivatePeriod Tracker Plus for an on-device AI health assistant, advanced insights, a full week-by-week pregnancy experience, a clinician report, and more — with no ads and the same privacy guarantees. Download PrivatePeriod Tracker and take control of your cycle, privately.