Acceptability of a Mobile Phone App for Measuring Time Use in Breast Cancer Survivors (Life in a Day): Mixed-Methods Study

Matthew Cole Ainsworth   ^{1 *} , BS, MPH ;   Dori Pekmezi   ^{1 *} , PhD ;   Heather Bowles   ^{2 *} , PhD ;   Diane Ehlers   ^{3 *} , PhD ;   Edward McAuley   ^{3 *} , PhD ;   Kerry S Courneya   ^{4 *} , PhD ;   Laura Q Rogers   ^{5 *} , MPH, MD

¹ Department of Health Behavior, University of Alabama at Birmingham, Birmingham, AL, United States

² National Cancer Institute, Division of Cancer Prevention, Bethesda, MD, United States

³ Department of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Urbana, IL, United States

⁴ Faculty of Physical Education and Recreation, University of Alberta, Edmonton, AB, Canada

⁵ Department of Nutrition Sciences, University of Alabama at Birmingham, Birmingham, AL, United States

*all authors contributed equally