GrandiNO

Never be surprised by hail again!

Welcome to GrandiNO!, the indispensable app designed specifically to predict, monitor, and protect you from hail storms in your exact geographic location. Whether you're at home, at work, or traveling, GrandiNO! monitors the sky for you and alerts you in time to protect your car, plants, and belongings.

Unlike standard generic weather apps, GrandiNO! uses an advanced physical-convective model that analyzes complex atmospheric parameters in real time (CAPE air instability, freezing level, upper-level wind direction, and storm triggers) to provide you with highly accurate estimates of local hail risk.

KEY FEATURES:

• EARLY WARNINGS (Up to 3 hours in advance)
Detects the approach of hail cells toward your area. The app calculates and clearly highlights:
- Estimated time of arrival (ETA) expressed in minutes.
- The actual probability of hailstorm (in %).
- The estimated diameter of the ice grains (expressed in millimeters).

• REAL-TIME RADAR WITH PRO ZOOM
View the movement of storms on a high-definition map (1 km resolution). Thanks to the 50% increased fractional zoom, you can focus the view precisely on your area and understand the direction in which the rain and hail are moving.

• TAILORED NOTIFICATIONS AND RISK THRESHOLDS
Avoid the hassle of constant unnecessary alerts. In the settings, you can define a custom threshold (e.g., notify me only if the probability exceeds 70%). You will receive an urgent push notification only when the risk becomes concrete for you.

• FIXED WEATHER IN THE STATUS BAR (Optional)
Enable a persistent notification (non-swipeable) to always keep an eye on the current temperature and hail risk level directly in your phone's notification bar, without having to open the app.

• "SAVE YOUR CAR" EMERGENCY GUIDE
At home or on the road and it's about to hail? Quickly access practical and effective tips on how to protect your car from body and glass damage, both when parked and while driving.

• 100% PRIVACY-FRIENDLY
GrandiNO! requires your GPS location only to calculate local weather and alerts for your area. Your location data is not tracked, stored, or shared with third parties.

Transparency Note:
GrandiNO! provides automatic estimates and forecasts based on advanced mathematical models developed from Open-Meteo and RainViewer data. This does not constitute an official weather warning from the Civil Protection Department. It is recommended to always follow the instructions of the competent authorities in case of severe weather.