Period & pregnancy tracking, in a calm space for your body & cycle.
Free calculators and trackers for your cycle and pregnancy. You don't need an account, we don't sell data, and nothing you enter leaves your device.
- Zero signupUse immediately
- Encrypted localClient-side only
- Clinical logicACOG standard
Peak energy
Estrogen and luteinizing hormone (LH) surge. You may feel more confident and notice clear, stretchy cervical mucus.
- What to eat
- Light salads, berries, zinc, lots of hydration.
- Body movement
- Group workouts, brisk walks, pilates, or dance.
May 17, 2027
Size of a blueberry
The heart tube starts to beat and the neural tube is forming.
Everything is calculated on your device. Nothing is sent or tracked.
Private health tools
No accounts and no trackers. Every calculation runs on your device.
Period & fertile window
Predict your next period, ovulation day, and fertile window, based on your own cycle length.
- Est. fertile window
- Days 10–16
- Peak conception
- Day 14
Due date & trimesters
A 40-week timeline from your last period, conception date, or IVF transfer, with your baby's size each week.
- Trimester 1
- Weeks 1–13
- Trimester 2
- Weeks 14–27
Pregnancy symptom quiz
Go through common early signs, like fatigue or tender breasts, to see how likely pregnancy is and when to test.
- Questions
- 12
- Privacy
- No cookies, local only
Chinese gender chart
The traditional lunar calendar chart, based on the mother's age and conception month. Just for fun.
- Method
- Traditional lunar chart
- Note
- For fun & amusement
How we handle privacy
Some period apps share cycle data with third parties. Lunita never stores your health data on a server.
- No registration needed
- Encrypted in browser
Kick counter & contraction timer
Count baby kicks and time contractions with the 5-1-1 rule in the Lunita Pregnancy Week by Week app.
Printable period tracker
Add your name, pick a color, and print a one-page monthly A4 tracker, filled in or blank to write on by hand.
Your cycle, phase by phase
Your cycle moves through four hormonal phases. Tap one to see what usually happens in your body during it.
The Menstrual Phase
Inner Winter · Days 1 to 5Progesterone and estrogen dip to their lowest levels, cueing the uterine lining to release. Your right and left brain hemispheres communicate most easily now, which makes it a good time to reflect and slow down.
- Hormone rhythm
- Low estrogen and progesterone. Metabolism runs slightly slower, and warmth can ease cramps.
- Foods
- Warm bone or miso broths, iron-rich beets & lentils, pumpkin seeds, magnesium-rich dark cocoa, ginger tea.
- Movement
- Restorative yoga, gentle stretching, warm Epsom baths, and naps if you need them.
How is your body feeling right now?
Tap how you feel today and we'll suggest something that might help.
Try this:
Cramps come from prostaglandins making the uterus contract. Heat, warm ginger or peppermint tea, and resting with your legs up a wall can help.
Pregnancy tracker & period tracker apps
Lunita's iPhone apps store everything on your device, lock with Face ID or Touch ID, and send nothing to third parties.
Pregnancy Week by Week app
Baby growth and fetal development week by week, prenatal and OB-GYN appointment tracker with reminders, pregnancy vitals log, baby budget tracker, fetal kick counter, and contraction timer.
Period Calendar & Tracker app
Period and ovulation tracker with period reminders, so you know when your next period and fertile window are coming.
- Works fully offline
- Discreet icon and Face ID / Touch ID lock
- Export to PDF for your doctor
From the Lunita Journal
Plain-language guides to cycle hormones, fertility, and early pregnancy.
See all articlesUnderstanding Your Menstrual Cycle
How estrogen and progesterone shape your energy, mood, and appetite across four distinct phases.
Your Fertile Window, Explained
Sperm can survive up to 5 days in fertile cervical fluid, so the days before ovulation matter most.
Early Pregnancy Symptoms: What's Normal
From mild cramps to a stronger sense of smell: the earliest signs, and when to take a test.