Krona Sunlight: Weather Ring

Krona Sunlight shows the next 24 hours of weather as one ring: in the app, in the Wear OS app and on a watch face.

THE RING
Temperature inside, colored by daylight and cloud cover. Rain and snow outside, sized by amount and probability. Weather where the phone or the watch is, or at a place you choose.

THREE PAGES
• Temperature & rain (actual or feels-like)
• Wind & gusts, with direction arrows
• Humidity & UV
Drag along the ring to read any moment. A 3-day chart under each page. 24-hour or 12-hour ring.

WEAR OS
Watch app with the same three rings, crown scrubbing. Watch face with the ring around the dial, installed from the app on Wear OS 6 and newer (older watches: separate free download). Complications: temperature, weather condition, rain timing, location, date, weather warnings. Premium: the three rings as tiles beside the watch face.

INCLUDED
One-time purchase: the app, the Wear OS app, the watch face, the complications. Two data options:
• Basic: Open-Meteo forecast data, updated every 3 hours. No setup.
• Custom: your own OpenWeatherMap API key. Full forecast data updated every 15 minutes; with a One Call 3.0 key, also OpenWeatherMap's minute-by-minute rain prediction for the next hour.

SUBSCRIPTION REQUIRED (PREMIUM)
• Apple Weather professional forecast data
• Full forecast data updated every 15 minutes
• Minute-by-minute rain prediction, worldwide (see below)
• Widgets: temperature & rain, wind, humidity & UV — on the phone's home screen and as tiles on the watch, plus a 24-hour chart widget for each page
Monthly or yearly, 7-day free trial, cancel anytime in Google Play.

MINUTE-BY-MINUTE RAIN PREDICTION
Up to four hours ahead, worldwide ("rain starts in 12 minutes"). Premium only. Radar where a radar network exists, satellite everywhere else (Rainbow Weather); in Germany, Austria and the Nordics the national radar (DWD, GeoSphere, MET Norway) leads the first hour. Not available at polar latitudes.

NOTIFICATIONS
• Weather warnings on every plan: the national weather service's official warnings for where you are, in its own words (the US, Canada, most of Europe and many more countries)
• Rain alerts: up to 20 minutes before rain starts, at the strength you choose, then live while it rains (Premium)

ACCURACY
Weather data can be unreliable. Krona depends on the accuracy of its providers' forecasts: Open-Meteo, Apple Weather, OpenWeatherMap, Rainbow Weather, and radar nowcasts from DWD, GeoSphere Austria and MET Norway.

PRIVACY
No account, no ads, no tracking. Position rounded to at least about 500 m before it is sent to our server, stored only as a coarse grid cell, deleted after 90 days. Background location optional; used only to keep widgets and watch current while the app is closed. Server data can be deleted at any time via the form the app links to. Weather warning notifications, when on: your approximate location and a notification ID are kept on our server, without your Data ID, until you switch them off.

ALSO FROM KRONA
Krona Moonrise, a separate app: the Sun, the Moon, the planets and the satellite passes of the next 24 hours, and whether the clouds will let you see them, as the same ring.
Krona Tidewater, a separate app and subscription: tide, waves, wind and a surf verdict for a beach, break or marina, as the same ring.

Available in: English, German, Spanish, French, Japanese.