Dry Window — minute-by-minute rain forecast for Germany from the DWD radar.

No model predictions, no rules of thumb. Dry Window analyzes the DWD weather radar in real time — a new frame every five minutes, 1 km resolution across all of Germany. A data-driven nowcasting algorithm on our backend in Frankfurt tracks the movement of each individual rain cell and calculates a minute-by-minute 60-minute forecast — pinpoint accurate for your location, not based on a postcode average. Dog walk in fifteen minutes? Dry Window tells you whether you need an umbrella or can start ten minutes later.

FREE — WHAT YOU GET WITHOUT A SUBSCRIPTION

• Rain nowcast 0–60 minutes for your location with mm/h intensity and minute-by-minute advance warning ("Rain in X min").

• Live radar map with time slider: 60 minutes backward (what happened), 60 minutes forward (what's coming). Play and fast-forward for smooth animation.

• Current weather (BrightSky / DWD): temperature, wind, gusts, humidity, air pressure.

• Wind current on the location map — radar motion with fallback to ground stations in dry conditions.

• DWD severe weather warnings within a 50 km radius of your location — no warning for Bavaria if you're in Hamburg.

• Location search by address, postal code, or city.

• Clean Liberty map style (OpenStreetMap-based).

• Ad-free. GDPR compliant. No trackers.

PRO – CONVENIENCE AND ALERTS

Dry Window Pro unlocks the following additional features:

• Push notifications before each shower — with custom profiles (threshold in mm/h, lead time in minutes, rest periods). "Running: warn me below 2 mm/h," "Dog: for every drop," "Barbecuing: from 3 mm/h."

• Multiple saved locations: Home, Work, Parents' House — each with its own push notification configuration.

• UV Index (DWD Medical Meteorology): Daily value + forecast + protection recommendation.

• Pollen count (DWD): 8 pollen types today/tomorrow/the day after tomorrow, color-coded by concentration.

• Weather sensitivity: Custom model based on barometric pressure trend and 24-hour change, separated by headache/circulatory/rheumatic symptoms.

• 24-hour forecast (BrightSky / DWD MOSMIX).

• Wind tab with animated particle flow field and color-coded wind overlay across Germany.

• All 5 map styles: Liberty, Positron, Bright, Dark, Fiord.

PRICES

• €0.99 per month — Try it free for 7 days, cancel anytime.

• €5.99 annually — Try it free for 7 days, saving you around 50% compared to monthly.

• One-time payment of €14.99 — Lifetime, no subscription, permanently activated.

Subscriptions renew automatically unless canceled at least 24 hours before the end of the current period. Manage and cancel your subscription at any time in your Apple ID account's subscription settings.

Privacy Policy: https://lucentdreams.eu/trockenfenster-datenschutz.html

WHERE THE DATA COMES FROM

• Radar/Precipitation: DWD Weather Radar (5-minute intervals, GeoNutzV).

• Warnings: DWD CAP feed.

• Pollen and UV: DWD Medical Meteorology.

• Current weather and 24-hour forecast: BrightSky (DWD MOSMIX).

• Base map: OpenStreetMap contributors (ODbL). Renderer: MapLibre GL.

Trockenfenster is not an official weather warning service—official warnings come from the German Weather Service (DWD) and are marked accordingly.

DATA PROTECTION

• No advertising. No trackers. No analytics. No advertising IDs (IDFA/AAID).

• Your location is sent to the backend for calculation purposes and is not stored there permanently. Push locations (lat/lon + threshold) are stored anonymously—no real name, no email address.

• Crash reports are sent to Sentry in the EU region (Frankfurt), without IP address, location, or user ID.

• Full privacy policy: lucentdreams.eu/trockenfenster-datenschutz.html

ABOUT THE DEVELOPER

Developed by LucentDreams (Daniel Kiefer) in Germany. Contact: ceo@lucentdreams.eu.

Legal: Precipitation data © DWD (GeoNutzV). Base map © OpenStreetMap (ODbL). Methods and benchmarks: lucentdreams.eu.

Trockenfenster: Regenradar