Track your period and understand your cycle patterns

A period tracker gives you one place to record what actually happens in your menstrual cycle. Instead of relying on memory, you can keep a dated history of when bleeding starts, how long it lasts and any cycle-related observations you choose to record.

Consistent records can make it easier to notice whether your cycle tends to follow a similar pattern or varies from month to month. Your own logged history is different from an app prediction: one records an event that happened, while the other estimates what may happen next.

Cycle timing can change because of normal biological variation and many other factors. A predicted period date should therefore be treated as an estimate rather than a guaranteed start date.

When a period begins earlier or later than predicted, recording the real date helps keep your history accurate. Over time, this gives you a more useful record than changing entries to match an expected calendar.

Tracking can support personal awareness and can help you describe your cycle pattern more clearly if you ever discuss it with a healthcare professional. It does not diagnose the cause of irregular, painful or unusual periods.

If bleeding becomes unusually heavy, pain is severe, periods repeatedly disappear or your normal pattern changes in a way that concerns you, professional medical advice is more appropriate than relying on an app prediction alone.