How can weight-loss app designers’ best engage and support users? A qualitative investigation

Abstract

Objectives. This study explored young adults’ experiences of using e-health internetbased computer or mobile phone applications (apps) and what they valued about those apps. Design and methods. A qualitative design was used. Semi-structured interviews were conducted with a community sample of 19 young adults who had used a publicly available phone or internet-based application. Transcripts were analysed using thematic analysis. Results. Participants valued an attractive user interface. Structure, ease of use, personalised features and accessibility (including dual phone-computer access) were all important to participants and users indicated that continued use depended on these design features. Many believed that a focus on calorie counting was too limiting. Some users mentioned behaviour change strategies and known behaviour change techniques utilised by apps including; self-monitoring, goal setting and behavioural feedback. Only a few users reported positive changes in physical activity levels. Conclusions. Use of particular design features and application of evidence-based behaviour change techniques could optimise continued use and the effectiveness of internet/smart phone interventions.