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Table 2 Mobile App Rating Scale categories with descriptions

From: Orthodontic apps: an assessment of quality (using the Mobile App Rating Scale (MARS)) and behaviour change techniques (BCTs)

Category Description
Engagement Evaluates entertainment, interest, customisation, interactivity and target group.
Functionality Evaluates performance, ease of use, navigation and gestural design.
Aesthetics Evaluates layout, graphics and visual appeal, i.e. how good does the app look?
Information Evaluates accuracy of the app description, app goals, quality and quantity of information, visual information, credibility and evidence base.