Track Your Period and Cycle Privately
Track your flow, mood, and symptoms — all on your device. Free, ad-free, fully accessible, and privacy-first.
🔒 AES-256-GCM encrypted. Data never leaves your device. No accounts, no tracking, forever free.
Add your last period for immediate predictions, or import existing data. You can also skip the date and start logging.
Used for predictions
Based on recorded flow
No history yet.
My Cycle Keeper estimates your fertile window by tracking cycle patterns. Ovulation is estimated ~14 days before your next period. Fertile days are calculated as day 8 through (cycle length − 11).
For regular 28-day cycles, this means days 8–17 are typically fertile, with ovulation around day 14.
⚠️ This is an estimation tool only. Not for contraception. Stress, illness & medications can shift timing.
Choose the app you exported from.
If the pattern is longer than a period, extra days are ignored. If it’s shorter, the last level repeats for the rest of the period.
Choose a format to download.
drip-compatible CSV for re-import into drip.
Simple spreadsheet with period dates, flow, pain, mood, and notes.
Period dates and durations are always included. Additional details are optional.