← ThrobbsIQ
Flow Finder
A simple, private way to understand where you are in your cycle today — and shop for comfort that matches.
Not medical advice or contraception. All math runs in your browser.
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Last period start date
First day of bleeding (Day 1).
Average cycle length (days)
Typical 21–35. Default 28.
Luteal length (days)
Usually 12–16. Used to estimate ovulation.
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