The most advanced weather app for Windows Phone


4castr was my first mobile app to reach a large audience. When the app was first released under the name Weather+ in January 2014, Windows Central called it "a powerful and beautiful forecast app." It was later renamed to 4castr as part of a contest in order to settle a trademark dispute. The app itself used the Weather Underground API as well as radar data from the National Weather Service. It was dubbed "the most advanced weather app for Windows Phone," as it offered unique features like spoken weather alert notifications and a gesture-controlled panel layout.


4castr received major updates until late 2015, at which point I had fulfilled nearly all of my user's requests. The app remained functional for Windows Phone users until February 2019, when Weather Underground shut down their API after being acquired by The Weather Channel. Given that the vast majority of users left the Windows Phone platform during 2015-2018, the app has not since been updated and is no longer available to download.

Video Demo

In The News

Official Microsoft Blog

Gizmodo UK



Windows Central


Microsoft Store Listing