Find the pattern behind how you feel.
Luna Chart helps you track your menstrual cycle and symptoms so you can discover recurring patterns in your own logged history.
A tracking and awareness tool — Luna Chart does not diagnose any medical condition.
How Luna Chart works
Track
Log your cycle, symptoms, mood, sleep and how you're feeling.
Discover
Luna compares symptom timing across your logged cycle history to help surface recurring patterns.
Understand
Review your personal insights and create a summary of your tracked history when needed.
More than a calendar
Luna Chart doesn't just show where you are in your cycle. As your history grows, it helps you see whether symptoms tend to appear at similar points across your tracked cycles.
Patterns are described only from what you log — nothing is inferred about your health beyond your own entries.
What patterns can look like
- Fatigue appearing more often later in the cycle
- Irritability recurring around a similar cycle stage
- Symptoms appearing without a clear cycle-timed pattern
Examples only — patterns in your logged data are not medical conclusions.
Built for awareness, not diagnosis
Luna Chart helps you understand patterns in the information you choose to track. It does not diagnose PMS, PMDD, or any other medical condition.
Cycle phases and future dates shown by Luna are estimates based on the cycle information you provide — they are not confirmed events.
Your tracking history is personal
Your Luna Chart entries are used to create your personal cycle, symptom and pattern views. You can delete your tracking history or delete your account from your account settings at any time.
Start building your pattern history
Join the private beta and log at your own pace — useful patterns come from consistent check-ins, not daily perfection.