“…The most common evaluative tools used were online surveys, interviews, and/or focus groups about accessibility, usability, satisfaction, integration into daily routine, and user experience (36, 48, 65, 70, 72-77, 79, 80, 85, 86, 88-90, 92) (18 studies). During field-deployment testing, 4 studies incorporated a pre-and posttest of nutrition improvement (48,65,79,88), 3 logging of application use (links followed, button pressing, messages responded to) and (48,70,72), 2 analytics for data uptake and usage metrics (65,85), and in 1 study testers kept a diary of when and where the application was used, progress, enjoyment, and thoughts related to nutrition content (79). When testing was not completed through a field-deployment design, paper or interactive-application mock-ups on a device were always used (52,73,77,85,86) (5 studies).…”