Ovulative
Mission & Vision

About Ovulative

Simplifying fertility tracking with transparency, privacy, and clinical standards.

Our Mission

We believe your health data is your property, period. Ovulative was born from a frustration with a broken health-tech industry that too often treats women's most sensitive data as a commodity to be sold.

We've all seen the headlines about major period trackers getting caught selling user data to advertisers or leaking details to third parties. It’s a betrayal of trust that should never happen. That's why we built differently. By leveraging modern browser technology, Ovulative runs 100% locally on your device. We physically cannot see, store, or sell your cycle history because it never leaves your phone.

Founder's Note

"I didn't build Ovulative just to be another calculator. I built it as a reaction to the privacy scandals plaguing this industry. After seeing trusted apps quietly monetize women's biology, I realized we needed a tool that was 'private by design', not just by policy. I wanted to create a safe haven—a clinical-grade tool that gives you the rigorous WHO-standard insights you need, without demanding you hand over your secrets to a cloud database. No logins, no tracking, just science."

— Founder & Developer, Ovulative

Methodology & Standards

We do not invent new science. Our algorithms are strictly based on the Standard Days Method® and Calendar Method protocols established by reproductive health organizations.

  • Standard Luteal Phase: We project a 14-day luteal phase, which is the clinical standard for regular cycles.
  • Fertile Window: We map the probability of fertility over a 6-day window ending on the day of ovulation.
  • Cycle Support: Our updated engine supports cycle lengths from 22 to 45 days.

Medical Disclaimer

Ovulative is an educational tool. While we use standard clinical formulas, every body is unique. This tool should not be used as a sole method of contraception. Always consult with a qualified healthcare provider for medical advice, diagnosis, or treatment.
Last Reviewed: Dec 28, 2025 Back to Calculator