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Frequently asked

Quick answers

Predictions improve the more cycles you log. If you've recently changed birth control, traveled across time zones, or your cycle is naturally irregular, accuracy may take a few extra cycles to stabilize.

Check Settings → Notifications inside LUNA first, then confirm notifications are allowed for LUNA in your phone's system settings. Battery optimization settings on some Android devices can also delay reminders.

Go to Settings → Partner Mode → Invite, and share the generated link or code with your partner. They'll need to install LUNA and accept the invite to connect.

Yes. Sign in with the same account on any device and your encrypted data syncs automatically through Firebase.

Visit our Delete Account page or go to Settings → Delete Account inside the app.

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