
Luna: Period Tracker & Seasons
Cycle Syncing, Phases & Moon
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Free
In-App Purchases
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About
Luna is a period tracker that reads your cycle as four seasons: Winter, Spring, Summer and Autumn. Instead of only counting days, Luna shows which cycle phase you are in, what your energy is likely to be like and how to plan around it.
YOUR CYCLE IN FOUR SEASONS
Each phase of your menstrual cycle becomes a season with its own colours and a season ring that shows where you are today:
- Winter (menstruation): rest and restore
- Spring (follicular phase): rising energy, a good time to start things
- Summer (ovulation): peak energy, social and creative
- Autumn (luteal phase): winding down, finishing and preparing for rest
YOUR NEXT 4 WEEKS
A season forecast shows which season is coming and when, so you can plan workouts, work and rest around your cycle. This is cycle syncing made simple.
ONE-TAP ENERGY CHECK-IN
Tap how your energy feels today. Over time, Insights shows your own seasons: how your energy really moves through your cycle, not just the textbook version.
SEASON GUIDE
Cards for every season: Food, Movement, Work and Self-care. Unlock an extra season pack with one short video, or with Premium.
MOON LAYER (OPTIONAL)
Turn on the moon layer to see the moon phases on your calendar. It is there for reflection and ritual; Luna makes no claims about the moon and your cycle.
PERIOD AND OVULATION ESTIMATES
Luna estimates your next period, your fertile window and your ovulation day from the dates you log.
DAILY LOG
- Flow (Heavy, Medium, Light, Spotting)
- Mood (Happy, Calm, Energetic, Anxious, Sad, Irritable)
- Symptoms (Cramps, Bloating, Headache, Fatigue and more)
- Basal body temperature (BBT): free in Trying to Conceive mode, otherwise with Premium
- Weight and sleep (Premium)
- Personal notes
CALENDAR AND INSIGHTS
See your cycle at a glance with colour-coded seasons, flow and mood dots. Insights shows your cycle history and average lengths, top symptoms, mood patterns and a BBT chart. The fertility heatmap and advanced insights open with one short video, or with Premium.
REMINDERS
Period (choose how many days before), daily log, pill and ovulation reminders.
TRYING TO CONCEIVE (OPTIONAL)
Turn on TTC mode to see fertile-window markers, track basal body temperature, log intimacy and get ovulation reminders.
PRIVATE BY DESIGN
- No account and no sign-up
- Your cycle entries stay on your phone; we have no servers that hold them
- PIN and biometric lock
- Backup and restore, CSV export, and a PDF cycle report to share with your doctor (one short video per report, or free with Premium)
FREE WITH ADS, OR LUNA PREMIUM
Luna is free with ads. The ads come from AdMob, which uses your device's advertising ID; your cycle entries are not shared with advertisers.
Luna Premium is a one-time purchase, not a subscription. It removes every ad and adds weight and sleep tracking and BBT outside TTC mode. The PDF report, fertility heatmap, advanced insights and season packs open without videos.
HEALTH NOTE
Luna's predictions are estimates based on the dates you log. Luna is not a method of contraception and not medical advice. Talk to your doctor about any health concern.
Your cycle. Your seasons. Your Luna.
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What's New in Luna
1.4.0
October 25, 2026
Bug fixes and minor improvements.
1
Subscriptions & In-App Purchases
$6.99
Premium
Premium







