Privacy Policy
World Clock with Aurora ("the App") displays world city times, sunrise/sunset and moonrise/moonset times, weather forecasts, and aurora oval forecasts. The App requires no user account or sign-in and operates no developer server that collects personal information. This policy explains what data stays on your device and what third-party services process.
1. Information the App does not collect
The App does not ask for or collect your name, email address, phone number, physical address, contacts, photos, camera, or microphone data. We do not operate any backend server that stores user profiles or personal history.
2. Optional location permission (processed on your device only)
If you grant optional location permission (ACCESS_COARSE_LOCATION or ACCESS_FINE_LOCATION), the App reads your device's coordinates solely on your device to match the nearest city from the bundled offline city list for your Home City setting.
- Your precise GPS coordinates are never stored on or transmitted to any developer server.
- Location permission is completely optional; if you deny it, you can manually select any city and use all clock, widget, weather, and aurora features normally.
3. Information stored locally on your device
The App stores the following preferences locally on your device only:
- Selected favorite cities, display order, and Home City selection
- Clock display style, 12/24-hour time format, temperature unit (°C/°F), and language preference
- Temporary in-memory weather and aurora forecast cache (up to 30 minutes) and home-screen widget display data
All locally stored preferences are permanently deleted when you clear the App's storage or uninstall the App.
4. Weather, aurora forecast APIs, and external links
To display weather and space-weather conditions, the App sends HTTPS requests using only pre-configured city coordinates (latitude and longitude) from the bundled city list:
- wttr.in (wttr.in) — current city weather conditions
- Open-Meteo (open-meteo.com/en/terms) — 7-day daily weather forecasts
- NOAA Space Weather Prediction Center (SWPC) (weather.gov/privacy) — geomagnetic KP index and OVATION aurora oval forecasts
When you tap a live webcam (webcam) button on an aurora city, the App opens the verified public stream URL in your external web browser or YouTube app, where that external service's own privacy policy applies.
5. Advertising (Google AdMob)
The App displays banner and interstitial ads served by Google AdMob. Ads are requested over encrypted HTTPS connections. To serve and measure ads and prevent fraud, Google's Mobile Ads SDK may collect and process:
- Your IP address, which may be used to estimate approximate location
- Device and advertising identifiers, such as the Android Advertising ID and App Set ID
- App and ad interactions, such as app launches, impressions, and taps
- Diagnostic and performance data, such as crash logs and launch timing
This data is collected and processed by Google LLC, not by us. Where required by law (for example in the EEA, UK, and Switzerland), consent options are respected. You can reset or delete your advertising ID anytime in your Android device settings (Settings → Google → Ads).
See Google's Privacy Policy at https://policies.google.com/privacy and ad settings at https://adssettings.google.com.
6. Children's privacy
The App is not directed to children under the age of 13, and we do not knowingly collect personal information from children under 13.
7. Changes to this policy
We may update this Privacy Policy from time to time. Updates will be posted on this page with a revised "Last updated" date. Effective date: April 15, 2026.
8. Contact
If you have any questions about this Privacy Policy or data practices, please contact:
Developer: dotliner (Hangik Lee)
Email: admin@dotlinerlab.com