Fon — Privacy Policy

Last updated 15 October 2026. Fon shows next-hour rain forecasts for places in Thailand.

What we collect

• An install identifier generated on your phone, and a secret used to authenticate it. No name, email or account.
• Places you save.
• If you let Fon use your location: your latest location rounded to about 100 m, sent when you move so the forecast and any current-location alerts are for where you are. Only the latest location is kept; turning location off for Fon in iPhone Settings stops it.
• A push notification token so we can send rain alerts, and Live Activity tokens while a countdown is running.

What we do with it

Only to compute forecasts and send the alerts you asked for. We do not sell data, show ads, or use third-party analytics or tracking.

Where it lives

On servers operated for Fon by Vercel and Neon in Singapore. Radar data comes from the Thai Meteorological Department and the Department of Royal Rainmaking and Agricultural Aviation.

Deleting your data

Deleting a place removes it immediately. Deleting the app stops all collection; inactive installs are purged after 90 days. You can also ask us to delete everything: email rolando.parame@gmail.com.