Last updated 26 September 2026
Sync My Cycle has no accounts and stores nothing about you. The dates you give (your last period start, cycle length and period length) are used once to work out the answer and are then thrown away. We do not keep them, log them or link them to you, and we never sell or share them.
Nothing is sent to any other service to answer your question.
The site runs on Cloudflare, which may keep standard technical logs (such as the time of a request) under the Cloudflare privacy policy. No tracking, ads or profiles.
Contact: hello@askmizan.com
Sync My Cycle · Privacy · Terms · hello@askmizan.com