Privacy Policy — Aerogram

Last updated: 01/08/2026

Aerogram is a weather-reference app that supports flight planning. We collect as little as possible.

1. No account or direct identification

The app does not ask for your name, email, registration, or login. There are no user accounts, and we do not attempt to identify you.

2. Data the app uses

• Anonymous device identifier: a random code generated on your device (stored securely on the device itself), used to enforce the free quota, verify subscriptions, and measure aggregate service usage and reliability. The identifier used for metrics is irreversibly transformed and is not linked to your identity.
• Location (optional): if you allow it, it is used only to show the wind ahead at your position. It is not stored or associated with you. You may deny the permission and the app still works.
• Route data: the airport codes (ICAO), level, coordinates, and times you enter are processed to retrieve flight information. Route contents are not retained in the server's metrics history.
• Operational metrics: we may record the endpoint used, HTTP outcome, platform, app version, device class, and approximate country supplied by the network infrastructure. We do not store raw IP addresses or city.

3. Third-party services

To produce weather and aeronautical products, the app (through our server) queries: AISWEB/DECEA (preferred METAR/TAF source and Brazilian NOTAM source), autorouter.aero (GRAMET, routing, weather fallback and international NOTAM), Open-Meteo / NOAA GFS (weather model), Deutscher Wetterdienst (MOSMIX), Aviation Weather Center (weather fallback and SIGMET), FAA (international NOTAM fallback), and Google Gemini (AI briefing text). Only the route/coordinate data needed for the query is sent — never personal data. Subscriptions are processed by the Apple App Store / Google Play and managed by RevenueCat with an anonymous identifier.

4. Retention

Operational events are deleted after 30 days; anonymous summaries of inactive devices after 90 days; and inactive quota records after no more than 400 days. Temporary idempotency records are deleted after 24 hours.

5. No tracking and no ads

We do not use third-party analytics, show ads, or sell or share your data for commercial purposes.

6. Children

The app is not directed to children under 13.

7. Security

Communication with the server uses HTTPS.

8. Changes

We may update this policy; the date above reflects the latest revision.

9. Contact

Questions: dion.lima@me.com