← 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.
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.
