Cycle Calculator
Track your cycle privately in your browser and estimate your fertile window.
This one's on the roadmap
We haven't built the Cycle Calculator widget yet — it's queued up. Want a nudge when it ships?
Frequently asked questions
- Will my data be private?
- Yes — like every Kitorra tool, this runs entirely in your browser. Nothing you enter is sent to a server or stored on our end.
- What will it estimate?
- Your next expected period start date and a fertile-window estimate, based on your average cycle length and last period date.
- When is it launching?
- No fixed date yet. Use the notify-me link below and we'll let you know.