Android and Apple mobile devices support a display option called Dark Theme, which you can think of as  almost a negative image of the normal screen display. In Dark Theme white is black, black is white, and color intensity in general is adjusted. Dark Theme reduces power requirements, which can extend runtime for a battery charge, and can be easier to view in low light.

Altova MobileTogether includes features to let developers create mobile apps that automatically support Dark Theme by detecting the user setting when the app is launched.

Let’s look at an example: