Adding typeface 'IBM PLEX MONO' to the app

The typeface IBM PLEX MONO which is used throughout the newly designed app has to be installed. Until now, any user, who has not installed the typeface manually, will see as an alternative a standard typeface.

As @CRSchmidt suggested, best would be to integrate the typeface into the app directly without using a 3rd party library or such. + The size can be reduced through Font Squirrel Webfont Generator.