Always on display is a best Night clock app. Super Amoled clock screen saver does not drain battery because, always on display clock on screen just turns on those Amoled required to show text, image or graphics while other pixels turned off. Always on display is a free night clock app which can shows date and time on your mobile screen.

Always on Display is a smartphone feature that show time, date and notification on screen with a lit display while the phone is asleep. Always on display (AOD) keep a limited portion of the screen on during sleep mode. this always clock on screen is provide a clock theme for android mobile time. This super amoled feature is called ambient display or active display.