Marea

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Add your first date to begin

Next period

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Mode

Period Fertile window Peak day Low chance Intimacy

Month Year

SMTWTFS

Period Fertile Peak Intimacy

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Average cycle length

History

Settings

Default cycle length (days) Period length (days)

Warn on unusual gaps Minimum gap (days)

If a new period start is logged fewer than this many days from another one, you'll be asked to confirm before it's saved.

App lock

Off — anyone with this device can open the app.

Please read: this app estimates fertile days using the calendar method based on dates you enter. It does not measure anything about your body directly, and calendar-based estimates are meaningfully less reliable than hormonal or barrier methods, especially if your cycles are irregular. If you're relying on this to avoid or achieve pregnancy, please talk to a healthcare provider about options that fit your situation.

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