Quality of Physical Activity Apps: Systematic Search in App Stores and Content Analysis

Sarah Paganini   ¹ , PhD ;   Yannik Terhorst   ² , MSc ;   Lasse Bosse Sander   ³ , PhD ;   Selma Catic   ² , BSc ;   Sümeyye Balci   ² , MSc ;   Ann-Marie Küchler   ² , MSc ;   Dana Schultchen   ⁴ , PhD ;   Katrin Plaumann   ⁵ , MSc ;   Sarah Sturmbauer   ⁶ , MSc ;   Lena Violetta Krämer   ³ , PhD ;   Jiaxi Lin   ⁷ , PhD ;   Ramona Wurst   ¹ , MSc ;   Rüdiger Pryss   ⁸ , Prof Dr, PhD ;   Harald Baumeister   ² , Prof Dr, PhD ;   Eva-Maria Messner   ² , PhD

¹ Department of Sport Psychology, Institute of Sports and Sport Science, Albert-Ludwigs-University Freiburg, Freiburg, Germany

² Department of Clinical Psychology and Psychotherapy, Institute of Psychology and Education, Ulm University, Ulm, Germany

³ Department of Rehabilitation Psychology and Psychotherapy, Institute of Psychology, Albert-Ludwigs-University Freiburg, Freiburg, Germany

⁴ Department of Clinical and Health Psychology, Institute of Psychology and Education, Ulm University, Ulm, Germany

⁵ Institute of Media Informatics, Ulm University, Ulm, Germany

⁶ Chair of Health Psychology, Department of Psychology, Friedrich-Alexander Universität Erlangen-Nürnberg, Erlangen, Germany

⁷ Department of Psychiatry and Psychotherapy Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany

⁸ Institute of Clinical Epidemiology and Biometry, University of Würzburg, Würzburg, Germany