Local-first alert engine
Nearby lightning checks and alert decisions are performed on-device using your configured radius and schedule.
Rolling retention window
Historical strike data is stored locally and automatically purged beyond a ~30 day window.
Security baseline
Network requests use HTTPS/TLS in transit.
No in-app advertising SDKs collecting behavioral profile data.
No account requirement for core feature access.
Data lifecycle
User settings and strike records remain on-device unless iOS backup behavior includes app data. THUNDRA does not operate a user cloud profile backend.