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Frequently Asked Questions
Is Luna really free?
Yes — completely free. All 9 features, no credit card, no trial period, no hidden fees.
How do I delete my account?
Go to Profile → scroll to the bottom → Delete Account. All your data is permanently deleted within 30 days.
Why does the app need my cycle length?
Your average cycle length is used to calculate predictions. You can update it any time from your Profile.
Is my health data safe?
Yes. Your data is encrypted and never sold or shared with advertisers. See our Privacy Policy for full details.