The dark mode option reduces white space on your screen by changing the background from white to a dark grey. Dark modes help to reduce screen glare, increase focus and can help to reduce eye strain.
To enable dark mode, open the given map choose the 3 dot icon in the top right corner of the app.
There choose Mind Map Settings
Click ‘Dark Background’ at the bottom of this menu to change the background from white, to dark grey.
The background will be a dark grey and any text will be white.
Click ‘Dark Background’ to revert back again.