Fig. 1From: Development and content validity of an application to assess 24-hour movement behaviors in 0–4-year-old children involving end-users and key stakeholders: the My Little Moves appScreenshots of the first version of the My Little Moves app. From left to right: login screen; choosing an activity category, with age-appropriate activity examples; selecting the time of the activity; follow-up question of the activity category ‘playing’: ‘Did your child play actively or calmly’; timeline, entered activities in the daily time-use overviewBack to article page