Required. This is not a standalone app. KustomLWP Pro or KustomWGT Pro is required and can be downloaded from the PlayStore. Included. A full Day/Night set of weather icons for Kustom. How to use with KLWP. Open the Kustom KWLP app. Tap the + icon. Select Komponent / Installed / FlatMat Weather. Change FlatMat settings to display desired icon. Tap on save icon.