This theme won't be updated anymore. Support ends with Pie. Rounded UI Pie/Oreo/Samsung/Oxygen is a substratum theme. If you don't know what I'm talking about, please don't download this theme because you won't be able to use it. This theme supports: Android Pie AOSP stock rom and custom roms. Android Oreo AOSP stock rom and custom roms. Samsung Oreo 8.