🌸 Ovulation & Fertile Window Calculator
Evidence-based estimates: day-by-day conception chances, ovulation range, upcoming cycles and signs to confirm.
Your cycle wheel
Tap any day to see what it means
Hormone rhythm across your cycle
Typical pattern, shown for understanding only. Your own levels can differ.
⚠️ Important: This tool gives calendar-based estimates only. Ovulation can change from cycle to cycle. “Lower chance” days are not guaranteed safe days for avoiding pregnancy. Please speak with a doctor for medical advice.
