Table 1.

Evidence-based strategies, health care expert involvement, and scientific testing in apps for weight management and in the CoSIE app. Adapted from Rivera et al [38] (n=393).

Evidence-based strategies	Frequency across included apps	CoSIEa app features
		Present	Comment
Self-monitoring	35.4	Yes	Only for weight
Automatic self-monitoring	10.2	No	Automatic physical activity self-monitoring was not included to avoid causing the children any stress
Goal setting	21.4	Yes	Only for selected users (families with children in obesity prevention program)
Physical activity support	27.5	Yes	In terms of availability of organized and nonorganized physical activities in the community (using a map with activities geo-localized)
Healthy eating support	23.2	Yes	Through recommended recipes in order to have a balanced diet, and information on seasonality of fruits and vegetables and on their nutrients
Weight/health assessment	25.4	Yes	Assessment of body mass index only
Personalized feedback	1.9	No	We exclude personalized feedback for all users because this would involve an unsustainable workload for public health care professionals. However, for children in the obesity prevention program, the app will inform the pediatrician of body mass index monitoring, eating, and physical activity habits
Motivational strategies	7.1	Yes	Through gamification, news, and specific tools for families with children in obesity prevention program
Social support	5.3	No	We exclude online communication with other users since it would involve supervision and control, which we cannot guarantee at the moment
Health care expert involvement in development	0.3	Yes	—
Scientific test	0.8	Yes	In progress

^aCoSIE: Cocreation of Service Innovation in Europe.