Figure 1.

Top row from left shows Home screen, Sleep tracking screen, Sleep tracking results, More information section. Second row shows core therapeutic content. From left shows Training sessions, Example screen from ‘Into the bedroom’, Example screen from ‘Beliefs about sleep’, Example screen from ‘Bouncing back’. Third row shows games and engagement components. From left: Sleep myths quiz example (embedded in the ‘Sleep scheduling’ training session), Bedroom game where user has to identify and click on items in the room which might hinder sleep (embedded in ‘Into the bedroom’ training session), an example of a sleep tip, and a Level up screen example when moving to the next stage/belt colour level in the training sessions sequence [Color figure can be viewed at wileyonlinelibrary.com]