CycleCalendar by YCS

CycleCalendar helps you track menstrual cycles on your device - privately, with optional cloud sync if you create an account. WHAT YOU CAN DO - Record period (phase) start and end, with notes - See your cycle day and a simple progress bar on Home - View calendar colors for menstruation, estimated fertile window, and estimated ovulation day - Log symptoms (flow, pain, mood, energy, and more) and optional temperature - Browse full cycle history and personal statistics (average cycle/phase length, temperature, symptom patterns) - Get local reminders around predicted period start/end (Yes / Not yet) HOW ESTIMATES WORK CycleCalendar stores your entered period dates and learns average cycle and phase length from your history (defaults: 28-day cycle, 5-day period when you start). From those averages it estimates: - next period start - period end while a period is active (until you confirm actual end) - ovulation day near mid-cycle - a fertile window around ovulation for personal awareness only These markers are algorithmic estimates for personal tracking. They are not medical advice, not a fertility prescription, and not a contraceptive method. Always use reliable contraception and medical advice for pregnancy prevention and health decisions. PRIVACY & ACCESS - Works without creating an account (guest mode on the device) - Optional Sign in with Apple, Google, or email for multi-device sync - 28-day free device trial, then an auto-renewable monthly Premium subscription for full write features after trial - Purchase and restore work with your Apple ID-app registration is not required Subscription details are presented in the app with pricing from the App Store. Manage or cancel in Settings → Apple ID → Subscriptions.