Preliminary User Evaluation of a Physical Activity Smartphone App for Older Adults

Objectives: Mobile health (mHealth) delivered through smartphone apps is a viable means of improving health behaviors. Technologies can be strengthened and made more age-inclusive by involving older adults as co-designers, resulting in more accessible and effective products. This study's purpose is to describe preliminary acceptability and feasibility of a physical activity (PA) app tailored to underactive older people. Methods: Moving Up is a multi-feature app designed to increase PA and reduce sedentary behaviors in underactive older adults. The suite houses a core activity tracker and three add-on features that target correlates of inactivity: sedentary behavior, stereotypes about aging, and PA knowledge and routines. Three groups of 4–5 older adult smartphone owners were provided with and oriented to the Moving Up app activity tracker and one add-on feature. Participants beta-tested the app for two weeks, after which each cohort reconvened to discuss experiences, make recommendations for app improvements, and complete a usability questionnaire on their assigned feature. Results: Thirteen participants (median age, 71 years; iOS users, n=8; females, n=12) completed the beta-testing period and returned for follow-up. Reported usability was moderate across the features. Sentiments about app content and general impressions were mainly positive, although users made several recommendations for app improvements such as more individualized messaging and timely notifications. Conclusions: A PA app for older adults demonstrated generally good usability and acceptability. Integrating the impressions and recommendations from older adults into the design of mHealth tools will enhance overall usability and likelihood to positively influence PA behaviors long-term.