BootApp

There are several ways to launch an app when the tablet boots up. For Android devices, there are several options.

First Approach:

On meeting room displays and high-performance devices, the BootAPP feature should be located under Settings/Accessibility.

Option 2:

The second option would be to use an app from the Play Store, such as this one here

There are many apps in the Play Store that can do this. Just search for "boot app" or "autostart app."