Period Tracker

What is Period Tracker?

Period Tracker helps you monitor your menstrual cycle privately. Log your period dates, track cycle patterns, and get predictions for your next period and fertile window — all data stays on your device with no account required.

How to use

1. Enter the start date of your last period and your average cycle length to begin tracking.
2. Log each period as it occurs to improve prediction accuracy over time.
3. View your cycle calendar with predicted period dates, fertile windows, and ovulation estimates.

Result

You want to track your cycle without signing up for apps that sell health data. Enter your last period date (March 15) and cycle length (28 days) — the tracker predicts your next period around April 12 and shows your fertile window, all stored locally.

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