Luna — Period & Ovulation

A period tracker with a little company. Luna helps you log your cycle, symptoms and moods with cute companions and home-screen widgets — no sign-up needed.

Your cycle, right on your home screen
See your D-day, next estimated period and this month’s calendar without opening the app. Pick from Ring, D-day, Today’s log, Cycle summary and Monthly widgets.

Covered by a cat. Revealed with a tap.
Prefer not to show dates on your home screen? Let your companion cover the widget. When the doctor asks about your last period, tap the cat to see it, then tap again to hide it.

Your cycle at a glance
Log when your period starts and ends. See past records, your next estimated period, estimated ovulation and fertile window together in the calendar.

Track a little. Know your cycle better.
Record flow, cramps and other symptoms alongside your mood. Explore average cycle and period lengths, frequently logged symptoms and changes over time to understand your own patterns.

Your theme. Your companion.
Make your diary feel like yours with charming characters and colorful themes. Choose a dark theme for a softer screen at night.

Make everyday tracking easier
• Reminders for estimated periods, ovulation and daily logging
• Optional four-digit PIN app lock
• Export and restore backup files

No account. Health records on your device.
Your period and health records are stored on your device and are not used to personalize ads. You can choose to export and share a backup. See the privacy policy for data handling related to ads, purchases and feedback you send.

Luna Pro
White Cat is the default companion. White Cat and Moon sprite, plus their app icons, are free. The free version includes ads. A one-time Luna Pro purchase unlocks every theme, companion, app icon and widget, and removes ads. No subscription. Your local price appears on the purchase screen. Restore purchases using the same store account on the same platform.

Period, ovulation and fertile-window predictions are estimates based on your records and are not guaranteed. Luna is not a medical device and is not intended for diagnosis, treatment or contraception. Consult a healthcare professional about health concerns.