PrivatePeriod Tracker

MASS Soft

About this app

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.

What’s new

Welcome to Private Period Tracker — your cycle, kept private on your phone.

• Log periods, flow, symptoms & mood in seconds
• Period, fertile-window & ovulation predictions
• Your whole cycle on one calendar
• Cycle, pregnancy & perimenopause modes
• Simple insights into your cycle patterns
• A private, on-device health library

No account, no ads, no data selling. Works fully offline — your data never leaves your device.