This is the new version of : AMOLED Live Wallpaper.
AMOLED 120HZ is designed specifically for new phones with a 90-120Hz display, and Android 13+.
The new version use more advanced graphics and animations that take full advantage of the 120Hz display technology, while still being optimized for battery life and display quality. You can change it in settings menu (+).
Overall, the AMOLED 120HZ app offer a much more immersive and visually stunning experience than its predecessor. 🙂