Dark Mode (Premium) - a special software that will be useful for gadgets where there is no built-in dark theme. Application, first of all, will significantly extend the battery life without recharging. But most importantly, the product will help minimize the effect of the display on the user's eyes. Through this mode, it will be much more convenient to read electronic books, because the brightness of the display will be automatically reduced. It is also important to note that to use the application you do not need to undergo special training, because here everything is quite simple and affordable.