Tell it about your cycle
Your last period, how long it usually lasts and your cycle. Not sure? Pick “I don’t know” and Lunami learns over time.
no email, no password
Coming soon to the App Store
Your cycle, private and clear.
Lunami is a private period tracker. Log your period, symptoms and mood in seconds, see clear estimates and plan your week around your cycle. Everything stays encrypted on your phone.
I want to try it
no account, no fuss →
- No account needed
- Encrypted on your phone
- No ads
Next period ≈ Oct 19
Your data stays on your phone
The idea
Every cycle is different.
Every cycle is different.
So are your estimates.
Lunami learns from what you log, shows you what’s a fact and what’s an estimate, and never asks for your health data in return.
7 in 10
people get period pain. Logging it helps you see when it shows up and plan with some slack.
Meta-analysis of 336 studies, PAIN, 202629.3 days
is the average length across 600,000+ real cycles. The “28-day cycle” is just one of many.
Bull et al., npj Digital Medicine, 20190
ads and 0 required accounts. Lunami runs entirely on your iPhone and your data stays encrypted there.
Privacy policy
How it works
Three steps. No sign-up.
In two minutes you see which day of your cycle you’re on.
Log in seconds
Bleeding, symptoms, mood, discharge, tests and notes. One tap each, one button to save.
“how are you feeling today?”Understand and plan
Your next estimated period, your patterns and a week planned around your cycle phase.
always as an estimate
Features
Everything you need. Nothing you don’t.
Calendar
Logged and estimated, clearly apart.
Your period days are a solid pink band. Estimates have a dotted outline and always say “estimated”. You’ll never mistake a calculation for a fact.
- Estimated next period, fertile window and ovulation
- Edit a period’s start or end in two taps
- Estimates update by themselves
Daily log
How are you feeling today?
Mark bleeding, symptoms with intensity, mood, discharge, sex and tests. Lunami only uses what you chose to log.
- Eight symptoms and eight moods
- Tap again to change the intensity
- Private notes for every day
Planner
Plan your week around your cycle.
Lunami works out each phase from your average cycle and suggests ideas for those days, based on common symptoms and on what you logged yourself.
- Dates for each phase, day by day
- “From your logs”: what repeats in your cycles
- Add an idea as a task in one tap
Insights
Your patterns, from your own logs.
How long your cycles and periods last, how they changed in recent months and what you log most often.
- Average cycle and the range of your recent cycles
- Most frequent symptoms and moods
- Calculated on your phone
Honest about the science
No magic promises.
The Planner is based on what the evidence actually shows, not on trends.
Your focus doesn’t change
A meta-analysis of 102 studies found no changes in attention or memory across the cycle. So we don’t promise “peak productivity days”.
Jang et al., PLOS ONE, 2025Before your period
Across millions of logs, tiredness, sadness and distraction rise in the days before and ease once the period starts.
Pierson & Althoff, Nature Human Behaviour, 2021Every body
Average cycle effects are small and vary a lot between people; researchers recommend looking at each person. That’s why Lunami shows what repeats in your own cycles.
McNulty et al., Sports Medicine, 2020- Everything is stored encrypted on your iPhone. No server can read your health data.
- No account needed. No ads and no third-party tracking.
- Discreet reminders: the lock screen only says “Cycle reminder”.
- Lock with Face ID or your phone passcode, if you like.
- Delete everything in one step, any time.
FAQ
What people ask most.
Do I need an account?
No. Lunami works without an account and your data stays encrypted on your phone. If you like, you can create one to keep an end-to-end encrypted backup that not even we can read.
How is my next period calculated?
From the average of your last recorded cycles (up to six). While you have few logs, we also use what you told us at the start. It’s always an estimate, and we say so.
Can I use Lunami as contraception?
No. The fertile window is an estimate and can’t be used to avoid pregnancy. Lunami isn’t a medical device and doesn’t diagnose.
Does it work with Apple Health?
Yes, if you turn it on. Lunami can save your period and symptoms to the Health app and read what you log in other apps.
I changed phones. Do I lose my data?
Not if you turned on the encrypted backup: on the new phone, sign in and enter your recovery code. You can also restore an encrypted iOS backup.
How much does it cost?
Lunami is free. No ads, and your data is never sold.
Which languages is it in?
Spanish, Portuguese and English.
Lunami for iPhone
Coming soon to the App Store.
Want to try it early? Write to us and we’ll add you to the beta.
Join the betaLunami shows estimates based on your logs. It isn’t contraception or a medical device, and it doesn’t replace seeing a health professional.