Ensure you are downloading a version of Nova Launcher that supports API 19 (KitKat). Later versions of Nova (v7.0 and up) generally require Android 5.0+. For 4.4.2, Nova Launcher v5.5.4 is widely considered the most stable "top" version.
To keep your Android 4.4.2 device running at peak performance with Nova Launcher: nova launcher prime apk for android 442 top
Press your home button and select Nova Launcher, then choose "Always." Performance Tips for Older Hardware Ensure you are downloading a version of Nova
Organize your apps into folders or tabs within the drawer for better navigation. To keep your Android 4
Clean up your interface by hiding bloatware that cannot be uninstalled on older 4.4.2 devices.
Locate the APK in your Downloads folder and tap to install.
If you see a "Parse Error," the APK version is likely too new for Android 4.4.2. Look for an older version of the Nova Launcher APK (specifically v5.x or earlier). To help you get the best setup, tell me: Is the device a phone or a tablet ? Are you experiencing lag that you want to fix?