Cycle Sync

Sync period data to Google Calendar with smart predictions.

Cycle Sync imports your menstrual cycle data and puts it on Google Calendar — automatically predicting the next 6 months based on your personal history. ────────────────────────────── HOW IT WORKS ────────────────────────────── 1. Export your health data from Apple Health, Clue, Flo, or Natural Cycles 2. Upload the file to Cycle Sync (XML or CSV) 3. See your cycle history and 6-month predictions instantly 4. Click "Sync to Google Calendar" — done ────────────────────────────── FEATURES ────────────────────────────── ▸ Supports Apple Health export.xml, Clue CSV, Flo CSV, Natural Cycles CSV ▸ Smart prediction algorithm — if your last period was 2 days late, the next prediction shifts by 2 days ▸ Each day of your period appears as its own Google Calendar event (blood red color) ▸ Predicted events include a ±1 day buffer for early arrival ▸ RSVP on predicted events to confirm or deny — helps refine future predictions ▸ 6 months of future predictions synced at once ────────────────────────────── YOUR PRIVACY IS THE PRIORITY ────────────────────────────── ▸ Your health data NEVER leaves your device ▸ All processing happens locally in your browser ▸ No account required, no servers, no tracking ▸ Only Google Calendar is contacted — using your own credentials Full privacy policy: https://scarlett0018.github.io/privacy.html