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Frequently Asked Questions

iCaelum aggregates data from multiple trusted sources (DMI, SMHI, FMI, Yr, Open-Meteo, OpenWeatherMap) to provide the most accurate forecasts possible. Accuracy varies by location and time range, but our multi-source approach helps you make better-informed decisions.

While iCaelum requires an internet connection to fetch current weather data, many features like sun/moon calculations, shadow tools, and previously cached data work offline. The app is optimized for minimal data usage.

iCaelum requires iOS 18.0 or later and is optimized for all iPhone models. We regularly update the app to support the latest iOS features and maintain compatibility.

Yes! We only use your location to provide weather and celestial data. Location information is not stored on our servers or shared with third parties for advertising. See our Privacy Policy for full details.