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Cloud sync is now enabled by default for new accounts. Existing privacy choices are preserved. Cycle history and notes sync automatically after sign-in.
Period tracker, cycle calendar, ovulation forecast, PMS prediction & AI coach.
Pemsi is the period tracker that predicts hard days before they hit. Most cycle apps only show what already happened. Pemsi forecasts what's coming — a 10-day PMS radar tells you which day this week will be the hardest, so you can move that meeting, swap that workout, and stop blaming yourself for "just feeling off." ★ WHAT YOU GET (FREE) ★ • Period tracker with monthly cycle calendar • Ovulation calculator and fertile window forecast • 10-day PMS prediction — see hard days coming • Symptom log: mood, cramps, energy, flow, sex, sleep • Cycle phase view (menstrual / follicular / ovulation / luteal) • Moon phase overlay on the calendar • Daily insight card tuned to your current phase • Cycle planner — re-schedule plans away from hard days • Hydration tracker, daily rituals, breath patterns • Multi-language: English, Українська, Русский ★ PEMSI PRO ★ • AI Coach — chat about why you feel what you feel today, get phase-aware answers • Symptom analytics — what really moves your symptoms (food, sleep, stress) • 6-month long-range cycle forecast • Daily AI Insight — personalised, never generic • Fertility signals: OPK, cervical mucus, BBT • Breath patterns library (4-7-8, coherent, box, energizer, belly) • Smart planner warnings — heads-up before you schedule heavy work on a predicted hard day • Two-way sync with Android Health Connect — your period and flow stay in sync automatically ★ PRIVACY-FIRST ★ Your cycle data is yours. By default everything lives on this device only — no account needed. Cloud sync is opt-in and end-to-end encrypted with a key derived from your password. Pemsi servers never see your plaintext data. We don't sell data. We don't run third-party ads. Health Connect access is opt-in and granular — you choose what to share. ★ WHO IT'S FOR ★ • Anyone tracking a menstrual cycle who wants better than basic • People with PMS, PMDD, or unpredictable cycles • Those trying to conceive (TTC) and want a clear ovulation window • Anyone managing symptoms — endometriosis, PCOS, perimenopause • People who like data + privacy ★ PERIOD TRACKING DONE RIGHT ★ Pemsi combines a clean cycle calendar with predictions you can actually act on. Period tracker, ovulation calculator, PMS forecaster, mood diary and AI cycle coach — all in one menstrual app, available in Ukrainian, Russian and English. ★ HOW TO START ★ 1. Open Pemsi, tap the date of your last period 2. Tell us your average cycle length (or pick the default 28-day cycle) 3. The 10-day PMS radar, fertility window and ovulation forecast come alive immediately 4. Log your first symptom — every entry sharpens the prediction The more you log, the smarter Pemsi gets. After three cycles the predictor switches from defaults to your real averages and regularity score. ★ ABOUT PEMSI ★ Pemsi is a wellness companion — not a medical device or contraceptive. Predictions are statistical, not diagnostic. Always consult a qualified clinician for medical decisions. ★ LEGAL ★ Terms of Service: https://pemsi.serenity.games/terms Privacy Policy: https://pemsi.serenity.games/privacy