Tide: Period & Cycle Calendar

Tide moves with your body's natural rhythm — a calm, private period and cycle tracker that predicts your period, ovulation, and fertile window, and keeps every bit of your data on your phone. No account. No cloud. No sign-up. Ever. 🌙 PERIOD & CYCLE TRACKER Log your period and symptoms in seconds. Tide learns your unique cycle and predicts your next period with honest confidence levels — never false precision. - Period calendar with a clear cycle view - Next-period and PMS predictions - Track flow, mood, cramps, energy, sleep and more 💧 OVULATION & FERTILITY Use Tide as an ovulation calculator to find your fertile window. - Ovulation and fertile-window predictions - Add basal body temperature (BBT) and cervical mucus for accuracy - Built for trying to conceive 💜 FOR EVERY STAGE Whether you're tracking your cycle, trying to get pregnant, pregnant, or navigating perimenopause, Tide adapts to you. - Pregnancy tracker, week by week - Perimenopause symptom tracking - One app, every life stage ✨ UNDERSTAND YOUR PATTERNS Tide connects your symptoms to your cycle, so you learn why you feel the way you do — days before it happens. 🔒 TRULY PRIVATE Your period data is sensitive. Tide stores everything locally on your device — no cloud, no account, nothing shared. Export or delete your data anytime. 🔔 GENTLE REMINDERS Get a heads-up before your period or fertile window so you're never caught off guard. Tide is not a contraceptive and not a diagnostic tool. Predictions are for information only — always consult a qualified professional for medical decisions.