Even on older devices, Nova Launcher remains a top choice because of its high performance and low resource consumption. For Android 4.4.2, it offers:
The ability to bring a "Material Design" look to the aging KitKat interface. Best Version for Android 4.4.2
Upgrading to the "Prime" version (typically through a license key or legacy APK) unlocks advanced power-user features: Nova Launcher FAQ
Full control over desktop grids, icon themes, and dock layouts.