White Icon Pack Style 4 Free is a personalization app for Android devices developed by Ronald Dwk. This free app offers over 5300+ round Pix UI design icons for mobile phones and tablets. The app also includes 57 folder icons, 158 app drawers, and 448 dynamic calendars. Users can choose from 100 HD cloud-based wallpapers and select from a variety of system and WhatsApp icons. The app supports 41 launchers, and it is available in 17 languages. Users can quickly apply the icons to their default launcher and receive update notifications through Firebase Cloud Messaging. The app also includes a tutorial, FAQs with a search function, and an option to bookmark icons. However, the app does not work with stock phone launchers.