Last updated: May 25, 2026
Luna stores the following data locally on your device: your period start and end dates, cycle length, flow intensity, symptoms, mood, and any personal notes you choose to add. This data is stored in a local database on your phone and nowhere else.
Nowhere. Luna has no servers, no cloud storage, and no backend infrastructure of any kind. Your data cannot be transmitted because there is no destination to transmit it to.
Luna uses no analytics tools, no crash reporters, no session recording, and no advertising identifiers beyond what AdMob requires (see section 4). We have no idea how many people use Luna, which features they use, or where they are located.
Luna's free version displays a single banner advertisement on the Insights screen, served by Google AdMob. AdMob may use your device's advertising identifier (Android Advertising ID) to show relevant ads. You can opt out of personalised ads in your Android device settings under Google → Ads → Delete advertising ID.
Luna Premium ($1.49 one-time) removes all advertisements permanently.
Luna requests the following permissions:
POST_NOTIFICATIONS — to send period and fertile window
reminders. You can disable these in Android settings at any time.
USE_BIOMETRIC / USE_FINGERPRINT — only if you enable
the optional app lock feature. Luna never accesses biometric data directly;
this is handled entirely by Android.
INTERNET — required only for the AdMob SDK to load ads.
Luna's own code makes zero network requests.
SCHEDULE_EXACT_ALARM — to deliver period reminders at
the correct time, not just approximately.
If you choose to export a backup, it is saved as an encrypted file (.lbk) to your device storage. Luna does not upload your backup anywhere. The backup file is encrypted with AES-256 and can only be read by Luna on your device.
Luna is intended for users aged 13 and above. We do not knowingly collect data from children under 13. As Luna collects no data at all, this is effectively a non-issue — but we state it for compliance.
If we update this policy, the new version will be posted at this URL with a revised "Last updated" date. We will note changes in the Play Store release notes.
Questions about this privacy policy:
ruhulrahat02@gmail.com