WeatherDiff vs Multi Weather

WeatherDiff does more than show today's temperature. It helps you understand what changed from yesterday, what may change next, and what that means for getting dressed or heading out. With WeatherDiff, you can quickly check: * How much warmer or cooler today feels than yesterday * Better windows for going outside * Notable weather changes across the next 7 days * When rain may start or clear * Weather differences between saved cities * Outfit guidance based on your personal comfort preference WeatherDiff is built for quick daily decisions before you leave home, commute, meet friends, or plan a short trip. It turns temperature, rain, wind, and air quality into simple change-focused guidance, so you can prepare with less guesswork. You can also use alerts and home screen widgets to notice meaningful weather changes earlier. Weather data and suggestions are for everyday reference only. For severe weather or safety-critical decisions, always follow your local official weather alerts. -------- Terms of Use: https://weatherdiff.com/eula Privacy Policy: https://weatherdiff.com/privacy-policy

Multi Weather lines up official agency forecasts and numerical model output on one screen so you can spot where they disagree at a glance. Instead of trusting a single forecast, compare the official JMA forecast with the output of several models to make on-site Go/No-Go calls faster. ■ Official forecasts and model output together See official forecasts from JMA, MET Norway, Apple and NWS (US), alongside numerical model output from GFS, ECMWF, ICON and more — whichever are available for your location — overlaid on one timeline. Weather symbols (each agency's or model's own classification), precipitation (amount/probability), wind, temperature, cloud cover and humidity, side by side. Data sources: JMA, NOAA GFS, NWS (US), ECCC (Canada, GDPS), MET Norway, ECMWF (IFS, AIFS), ICON model (DWD), HARMONIE model (DMI), Apple Weather. ■ See the disagreement Every source is drawn on the same graph, so the hours where forecasts and model output split are visible at a glance. The way professionals read model differences — in seconds, for anyone. ■ Evidence export (CSV and PDF) Export the comparison as CSV or PDF to share. Hand a clear basis for a stop/postpone decision to clients or contractors. ■ Jump to other services Open JMA, tenki.jp, Yahoo Weather or Windy for the exact spot you're viewing, in an in-app window. ■ Built for the field For construction, civil works, ports, surveying, drones, film shoots, fishing and hiking — anything weather-dependent. Note: This app does not make its own forecast. It shows official agency forecasts (e.g. JMA) and numerical model output as provided, side by side. Numerical model output is not a forecast and may contain large errors. Final decisions are your responsibility. The first 30 days are completely free. To keep using all features afterward, an auto-renewing subscription (monthly or yearly) is required — cancel anytime. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://qconp.com/privacy