Privacy policy
Core principle: your health data is not ours to keep. Every calculator on this site (safe period, ovulation, due date, period) runs locally on your device. The dates and cycle details you enter are never sent to any server — we cannot see them and we do not store them.
Analytics: we use cookie-free, privacy-friendly analytics (Cloudflare Web Analytics) to count page visits. It does not track individuals or build profiles.
Advertising: third-party ads shown on pages (e.g. Google AdSense) may use cookies under their own policies — see our advertising policy and the vendors’ privacy notices. You can manage cookies in your browser settings.
Contact: questions about privacy are welcome via the site email (published at launch).