An App to Improve Eating Habits of Adolescents and Young Adults (Challenge to Go): Systematic Development of a Theory-Based and Target Group–Adapted Mobile App Intervention

Anna Rohde   ^{1, 2, 3} , MSc ;   Anja Duensing   ^{1, 2} , MSc ;   Christine Dawczynski   ^{1, 2} , PhD ;   Jasmin Godemann   ³ , PhD ;   Stefan Lorkowski   ^{1, 2} , PhD ;   Christine Brombach   ^{1, 4} , PhD

¹ Institute of Nutritional Sciences, Faculty of Biological Sciences, Friedrich Schiller University Jena, Jena, Germany

² Competence Cluster for Nutrition and Cardiovascular Health, Halle-Jena-Leipzig, Germany

³ Department of Communication and Engagement in Agricultural, Nutritional and Environmental Sciences, Justus Liebig University Giessen, Giessen, Germany

⁴ Institute of Food and Beverage Innovation, Zurich University of Applied Sciences, Zurich, Switzerland