Before installing, back up your current launcher data. And if you really love Nova, consider buying Prime legitimately once (even on a modern device) and then sideloading the old APK—that’s legally and morally clean.
: Users can bypass the limitations of the original KitKat launcher by adjusting grid sizes, subgrid positioning, and icon themes. Prime-Exclusive Features for Android 4.4.2 nova launcher prime apk for android 442 top
Because the Google Play Store often serves the "latest" version which might not support 4.4.2, users often turn to reputable archival sites: Before installing, back up your current launcher data