Smart predictions
Period, fertile window and ovulation predicted 12 months ahead, with an honest confidence range that adapts to your cycle.
100% free · Every feature included
Understand your cycle. Listen to your body.
Period, ovulation and symptom tracking that's beautiful, accurate and private. Every feature is free, for everyone.
- Encrypted health data
- Never sold
- 6 languages
Today
Cycle day 23
Period in
5 days
Low chance of pregnancy
Fertile window
Calm
Creamy
Your period is coming
Expected in 2 days. Keep your supplies handy.
Everything you need. Nothing to pay.
The features other apps keep behind a subscription are free here.
A beautiful calendar
See your whole cycle at a glance. Swipe between months and tap to edit your period dates.
Log in seconds
Flow, 24 symptoms, 16 moods, discharge, sex, sleep, temperature, tests, pill… and your own tags.
Insights that matter
Cycle history, regularity and patterns like “headaches 2 days before your period”, plus gentle health alerts.
Ovulation confirmed
Basal temperature charts and LH tests refine your ovulation date, like the pros.
Every stage of life
Track your cycle, try to conceive, follow your pregnancy week by week or navigate perimenopause.
A report for your doctor
A clean, printable summary of your cycles and symptoms, ready for your next appointment.
Reminders
Period, fertile window, pill, temperature, daily log — with discreet notifications if you prefer.
Private by design
Health data encrypted at rest, never sold, never shared with advertisers. Export or delete everything anytime.
Premium elsewhere. Free here.
FeatureOften elsewhereLunaria
- Symptom patterns & analysisPaidFree
- Doctor report (PDF)PaidFree
- Conceive, pregnancy & perimenopause modesPaidFree
- 12-month predictionsLimitedFree
- Basal temperature chartPaidFree
- Unlimited custom tagsLimitedFree
Start in 30 seconds
- 1
Create your free account
With your email or in one tap with Google.
- 2
Tell us about your cycle
Your last period and your usual cycle length.
- 3
Get your predictions
Calendar, insights and reminders adapt as you log.
Your intimate data stays yours
We're funded by discreet ads, not by your data.
- Health data encrypted in our database (AES-256)
- Never sold, never shared with advertisers
- Ads are contextual and never see your cycle
- Optional lock code and two-factor authentication
- Export or permanently delete your data in one click
- Hosted in Europe, GDPR compliant
Guide
Clear, reliable answers about your cycle and your body.
Questions & answers
Is it really free?
Yes. Lunaria is funded by a few discreet ads, and every feature is free. If you’d rather have no ads at all, an optional Ad-free subscription removes them, without unlocking anything else.
How are my data protected?
Your health data is encrypted before being stored, transmitted over HTTPS and never sold or shared with advertisers. You can export or delete it at any time.
How accurate are the predictions?
Predictions are based on your own history and become more accurate as you log. We show a confidence range so you always know how certain an estimate is.
Can I use Lunaria as contraception?
No. Calendar predictions are estimates and are not a reliable method of contraception. Talk to a health professional to choose a method that suits you.
My cycles are irregular. Can I use Lunaria?
Absolutely. Lunaria adapts its predictions and widens its ranges for irregular cycles, and helps you spot changes worth discussing with a doctor.
Can I use it on my phone?
Yes. Lunaria works in any browser and can be installed on your home screen like an app, with notifications.
Ready to understand your cycle?
Join for free. No credit card, no subscription.
Create my free account