Privacy Policy

ISOBARIC (“the App”) is committed to protecting your privacy. This policy explains what data we collect, how we use it, and your rights.

1. Data We Collect

Location Data: The App accesses your device’s GPS location solely to provide weather forecasts, radar imagery, and severe weather alerts for your current area. Coordinates are sent to our push-notification relay server to match your location with active warning polygons and to weather data APIs to retrieve forecasts and alerts.

Encrypted Storage: Your most recent location and app preferences are stored locally on your device using AES-256 encrypted SharedPreferences. This data is never shared with third parties.

Device Token: A Firebase Cloud Messaging (FCM) token is generated by your device and sent to our relay server so it can push severe weather notifications to you. This token is stored server-side alongside your last-reported GPS coordinates.

App Preferences: Settings such as map type, animation speed, radar opacity, map pins, and the paid status toggle are stored locally on your device. This data never leaves your device.

2. How We Use Your Data

Your location data is transmitted to the following services, solely for the purpose of retrieving weather information or delivering alerts:

• National Weather Service (api.weather.gov) — severe weather alerts and warnings
• NOAA GeoServer (opengeo.ncep.noaa.gov) — radar and satellite imagery
• Iowa State Mesonet (mesonet.agron.iastate.edu) — radar data
• NWWS-OI Relay — push-notification server that receives your GPS coordinates and FCM token to deliver severe weather alerts to your device

Advertising: The free tier of the App displays banners served by Google AdMob. These ads may use the device’s advertising ID and coarse location for ad personalization. AdMob does not receive your precise GPS coordinates. You may remove all ads via the Paid subscription toggle in Settings.

3. Data Sharing and Disclosure

We do not sell, trade, or rent your personal data.

Your data is shared only with the services listed above for the limited purposes described. Specifically:

• Weather APIs receive your approximate coordinates to return localised data
• The NWWS-OI relay server stores your last-known GPS position and FCM token
• Google AdMob receives your advertising ID and coarse location for ad serving in the free tier

When the Paid subscription is active, all ad requests cease entirely.

4. Data Security

All network requests to weather APIs, the NWWS-OI relay, and AdMob are made over HTTPS. Location data stored on your device is AES-256 encrypted. The NWWS-OI relay server stores device data in a restricted database accessible only by the server process. We do not log, cache, or retain location data beyond what is necessary for alert delivery.

5. Children’s Privacy

The App does not knowingly collect personal information from children under 13. If you believe a child has provided personal information, please contact us and we will delete it promptly.

6. Your Rights

You have the right to:

• Access your data — all stored data is viewable within the App
• Delete your data — clear pins, prefs, or the billing flag from the App at any time
• Control location access — revoke location permission via Android Settings
• Opt out of background alerts — disable notifications in Android Settings
• Opt out of ads — enable the Paid toggle in Settings to remove all advertisements

7. Changes to This Policy

We may update this privacy policy from time to time. Changes will be posted within the App and the effective date will be updated accordingly.