Luna is a beautiful, private period tracker and ovulation calendar that maps your menstrual cycle to the four seasons — Winter, Spring, Summer, and Autumn — so you can understand your body's natural rhythm at a glance.
More than a period calendar, Luna predicts your next period, fertile window, and ovulation day, then shows you which phase you're in, what to expect, and how to make the most of each stage of your cycle.
FOUR-SEASON CYCLE PHASES
Your cycle is more than just a period. Luna divides it into four distinct phases, each with its own energy, nutrition tips, and exercise guidance:
- Winter (Menstruation) — Rest and restore. Your body is shedding and renewing.
- Spring (Follicular) — Rising energy. A great time to start new projects and try new things.
- Summer (Ovulation) — Peak energy and confidence. You're at your most social and creative.
- Autumn (Luteal) — Winding down. Focus on completing tasks and preparing for rest.
DAILY LOGGING
Track what matters to you, all in one place:
- Flow level (Heavy, Medium, Light, Spotting)
- Mood (Happy, Calm, Energetic, Anxious, Sad, Irritable)
- Symptoms (Cramps, Bloating, Headache, Fatigue, and more)
- Basal body temperature (BBT) for fertility awareness
- Weight and sleep tracking
- Personal notes
BEAUTIFUL CALENDAR
See your entire cycle at a glance with color-coded phase markers. Tap any day to view or edit your log. Flow indicators and mood dots make patterns easy to spot.
INSIGHTS & TRENDS
Understand your body better with:
- Cycle history with average lengths
- Top symptoms frequency
- Mood distribution
- BBT temperature trend chart
- Logging activity stats
SMART REMINDERS
Never be caught off guard:
- Period reminder (configurable days before)
- Daily log reminder at your chosen time
- Pill reminder
- Ovulation reminder
TRYING TO CONCEIVE
Enable TTC mode to see fertile window markers on your calendar, track basal body temperature, log intimacy, and get ovulation reminders.
PRIVACY FIRST
- Your cycle data stays on your device — never uploaded, never sold
- PIN & biometric lock
- No account, no sign-up, no cloud sync
- Health data is yours alone; ads are the only third-party content
EXPORT YOUR DATA
- CSV spreadsheet for personal analysis
- PDF cycle report for doctor visits
- Full backup and restore
Your cycle. Your seasons. Your Luna.
