Privacy Policy — 3D Moon Atlas by LumenAstralis
Last updated: October 24, 2026
Developer: Lumen Astralis
Privacy contact: [email protected]
This Privacy Policy applies to 3D Moon Atlas by LumenAstralis, also referred to as 3D Moon Atlas within the app.
1. Overview
3D Moon Atlas is an interactive lunar globe and educational application that works offline and does not require an account.
The current version does not include advertising, analytics, or developer-operated servers. The app does not transmit your location coordinates or saved preferences to Lumen Astralis or to analytics or advertising services.
2. Location and coordinates
The app requests Android location permission only when you select Get location by GPS in the observer-coordinates settings.
The app obtains a one-time foreground location fix. It does not request background location access or continuously track your location.
The latitude and longitude are used to populate and display observer coordinates within the app. You can also enter coordinates manually without granting location permission.
In the current version, saved observer coordinates do not affect the calculations of the Moon's position or illumination.
Coordinates are processed and saved locally on your device. They are not transmitted to developer-operated servers.
3. Information stored on your device
The app stores the following information locally:
- Selected interface language.
- Interface font-size setting.
- Observer coordinates.
The app also copies bundled lunar ephemeris files into its private storage to support offline astronomical calculations. These files contain astronomical data, not personal information.
Locally stored information remains on your device until you modify it, clear the app's storage, or uninstall the app.
Android backup and device-transfer features may retain separate copies, as explained in Section 5.
4. Network access and external links
The lunar globe, object catalog, settings, and built-in ephemeris calculations work offline.
The app does not connect to developer-operated servers.
When you open a reference link from an object information card, the link opens in your external web browser.
The destination website may receive technical information, including your IP address, according to its own privacy practices.
Lumen Astralis does not control these external websites and does not receive information about your browsing activity through these links.
5. Android backups and device transfers
Depending on your Android version, device configuration, and backup settings, Android's system backup or device-to-device transfer features may include locally saved application preferences and files.
These processes are managed by Android and your device or Google account settings. Backup data is not transmitted to a Lumen Astralis server.
Clearing the app's storage or uninstalling the app removes its local data, but does not necessarily remove copies previously stored through Android backup services.
You can review and manage available backup options through your Android device settings.
For additional information, see the Android Auto Backup documentation.
6. Data security
Application preferences and ephemeris files are stored in the application's private storage area managed by Android.
The app does not use personal accounts or a developer-operated user database.
The security of locally stored data and system backups also depends on your Android device, account, and backup configuration.
7. Policy changes and contact
This Privacy Policy may be updated if the app's functionality or data-handling practices change. The revision date at the top of this page will be updated accordingly.
For privacy-related questions, contact: