Cycle
- A symptom map of when things tend to happen
- Real start-to-start intervals from your records
- An optional estimate based on your own average
Your cycle, pregnancy and recovery, kept on your phone.
Luna is a calm wellness journal for every chapter. No account, no ads and no tracking. Your entries stay on your device, and you can lock them with a passphrase.
Works in any modern browser and installs on your home screen like an app. English and 中文.
Every cycle is different. Luna learns nothing about you that you didn’t write down, and shows your own pattern as you record it.
Three chapters, one quiet place
Switch chapters whenever life does. Your earlier records stay with you.
Pregnancy
- Baby movement log and contraction timer
- Blood pressure and weight for check-ups
- Week cards and questions for your midwife
After birth
- One-tap feeds and nappies, with a night mode
- Bleeding log with clear warning signs
- Guided pelvic floor sessions once you’re cleared
Your health data stays on your phone
Period and pregnancy records are some of the most personal data there is. Luna is built so that we never have them.
No account
You never sign up or log in. There is no profile of you on any server.
Stored on your device
Your journal lives in your browser on your phone. Nothing is uploaded.
Optional encryption
Lock Luna with a passphrase. Entries are then encrypted with AES-256 before they are saved.
No ads, analytics or trackers
This site and the app load nothing from advertising or analytics companies.
Changing phones? Export an encrypted backup file and restore it on the new one. Read the privacy policy.
Small things that help every day
Daily check-in
Mood, symptoms, water and sleep in under a minute.
Visit summary
One page of your own records to print or show your doctor.
Luna Garden
Every day you log plants something. Missed days never wilt anything.
Gentle moments
Milestones from your records, with no streaks to lose.
Works offline
After the first visit, Luna opens without a connection.
Safety first
Clear signs for when to call your midwife, doctor or emergency number.
Put Luna on your home screen
It takes a few seconds and needs no app store.
iPhone
- Open Luna in Safari.
- Tap the Share button.
- Choose Add to Home Screen.
Android
- Open Luna in Chrome.
- Tap the menu (⋮).
- Choose Install app.
Free for every chapter. Plus if you’d like more.
The care and safety tools are free for everyone, always. Luna Plus adds a few extras and keeps Luna independent.
| What you get | Free | Plus |
|---|---|---|
| Cycle, pregnancy and after-birth tools | Yes | Yes |
| Safety information and visit summary | Yes | Yes |
| Encryption and backups | Yes | Yes |
| Custom trackers for anything you want to follow | – | Yes |
| Deep insights: mood and sleep across your cycle, 12-month trends | – | Yes |
| Baby growth and sleep, with support for twins | – | Yes |
| Sunday letter, your week in cards | – | Yes |
| Flower and garden themes | – | Yes |
| 90-day patterns and 180-day summaries | – | Yes |
| Week cards saved as images | – | Yes |
| Price | Free | $14.99 once |
One-time purchase, no subscription. Buy inside Luna under Settings, Luna Plus. Payments are handled by Lemon Squeezy.
Questions
Is Luna medical advice?
No. Luna is a personal journal with general education. It does not diagnose anything. Always follow your doctor or midwife, and in an emergency call your local emergency number.
Can I use Luna for birth control?
No. Period estimates can be wrong, especially when cycles vary. Luna does not predict fertile days and must not be used as contraception.
Where is my data?
Only in the browser on your device. We don’t have a copy and cannot see it. If you clear your browser data without a backup, your journal is gone.
What happens when I change phones?
In Settings, export a backup. Luna asks for a backup password and saves an encrypted file. Open Luna on the new phone and restore that file.
Does Luna work offline?
Yes. After Luna has loaded once, it opens and saves without a connection.
How do I use Plus on another device?
Enter the same license key under Settings, Luna Plus. Your key works on a small number of personal devices.