Cycle length over time

Each point is the length of one cycle. The dashed line is your personal average. Points flagged in amber or rose fall outside the typical range — a gentle nudge to notice.

Basal body temperature

Basal temp usually rises after ovulation and stays higher until your next period. Log it each morning before getting up for the clearest pattern.

Your profile

Backup & restore

Export an encrypted-by-you JSON file of everything Luna knows. Keep it somewhere safe. Re-import anytime to restore on this or another browser.

Privacy

All your data lives only in this browser's local storage (localStorage). Luna never sends anything to any server. Clearing your browser data or "site data" will erase your logs — export a backup first. You can also wipe everything below.