Privacy Policy

Interstellar Tracker · Last updated: April 2026

      Short version: Interstellar Tracker does not collect, store, or share
      any personal data. Your camera, location, and motion sensors are used only on your
      device in real time and are never transmitted to our servers.
    

What Data We Access

The app requests access to the following on-device resources:

Camera — used to display the live sky view behind the AR overlay. No images or video are captured, stored, or transmitted.
Location (GPS) — used to calculate the altitude and azimuth of celestial objects (comets, meteor showers, near-Earth objects) relative to your position. Your coordinates are used locally on-device only and are never sent to our servers. Location data is not stored between sessions.
Motion & Orientation Sensors — the accelerometer, gyroscope, and compass are used to detect which direction you are pointing your phone so the AR overlay can display the correct region of sky. Sensor readings are processed in real time and never stored or transmitted.

Third-Party Services

The app communicates with the following external services:

NASA CNEOS Close-Approach Data API (ssd-api.jpl.nasa.gov) — fetches publicly available data on near-Earth objects and comets. No user information is included in these requests.
three.js CDN (jsDelivr) — loads the 3D rendering library used for the AR star-field. Only the JavaScript file is downloaded; no user data is sent.

We do not use advertising networks, analytics SDKs, crash-reporting services, or social login providers.

Browser Notifications

If you choose to enable browser notifications, your preference is stored in your browser's local storage on your device only. We do not operate a push-notification server. Notifications are generated entirely on-device and no notification content or event data is sent off your device.

Data Storage

Interstellar Tracker stores the following data locally in your browser's localStorage:

A list of celestial events you have already been notified about (to avoid repeat alerts). This list contains only object names and dates — no location data.

This data never leaves your device and can be cleared at any time by clearing your browser's site data for this app.

Children

Interstellar Tracker is intended for general audiences aged 13 and over. We do not knowingly collect any information from children under 13. Because we collect no personal data at all, there is nothing to delete or correct.

Your Rights

Because we do not collect personal data, there is no profile to access, correct, or delete. If you have any privacy concerns, please contact us at the address below and we will respond within 2 business days.

Changes to This Policy

We may update this Privacy Policy to reflect changes in the app's features. The "Last updated" date at the top of this page will always reflect the most recent revision. Continued use of the app after changes constitutes acceptance of the revised policy.

Contact

Questions or concerns about privacy:

interstellartracker@gmail.com