Nova Launcher Prime is a premium upgrade for the standard Nova Launcher, offering an ad-free experience and advanced customization features . If you are looking to install it on a device running Android 6.0.1 (Marshmallow)

Quickly find specific customization options without digging through menus. Adaptive Icon Options:

: Stay on top of your messages with numeric dots or dynamic badges that show you exactly how many alerts you have at a glance. How to Get Started Safely

4. Icon Themes Android 6.0.1 doesn't natively support full icon pack theming in many stock launchers. Nova bridges this gap. You can install popular icon packs from the Play Store (or sideloaded APKs) and apply them system-wide, completely changing the look of your aging device.

For devices running Android 6.0.1 (Marshmallow) , the most stable and feature-rich experience is found in Nova Launcher

Starting with version 6.0, icon resizing became a free feature (no longer requiring the Prime upgrade). Folder Styles: