Cycle Tracker
Your personal menstrual cycle companion
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Sign in to get personalized predictions based on your actual cycle data
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Ovulation Calculator
Calculate your fertile window without signing in (limited to 3 calculations per day)
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Sign in to unlock Cycle TrackerWhat is the Cycle Tracker?
The Cycle Tracker is a comprehensive menstrual cycle tracking tool that helps you understand your body's patterns. By logging your periods regularly, you get personalized predictions for your next period, fertile window, and ovulation — all based on your actual cycle data, not just averages.
How It Works
- Log your periods — Enter the start and end dates as they occur
- Track consistently — More data means more accurate predictions
- View your calendar — See upcoming periods and fertile windows
- Monitor patterns — Track cycle length variations over time
Key Features
Period Predictions
Know when to expect your next period based on your history
Fertile Window
Identify your most fertile days for family planning
Ovulation Tracking
Estimated ovulation date based on your cycle
Cycle Statistics
Average cycle length and variation insights
Pattern Recognition
The more you track, the smarter predictions become
Private & Secure
Your data stays private and protected
Understanding Your Cycle
- Cycle length — The number of days from one period start to the next (typically 21-35 days)
- Fertile window — The 5 days before ovulation plus ovulation day when conception is possible
- Ovulation — When an egg is released, typically 14 days before your next period
- Irregular cycles — Variation is normal; tracking helps identify your personal pattern
Frequently Asked Questions
How many cycles should I track?
Predictions start immediately, but accuracy improves significantly after tracking 3 or more complete cycles. The more data, the better the predictions.
Can I track irregular cycles?
Yes. The tracker adapts to your unique pattern, whether regular or irregular. It uses your actual data rather than assuming a standard 28-day cycle.
Is this a replacement for medical advice?
No. This tool is for personal tracking purposes. For concerns about your menstrual health or fertility, please consult a healthcare provider.
Note: Cycle predictions are estimates based on your historical data. Many factors can affect your cycle, including stress, illness, and lifestyle changes. This tool is for informational purposes only.