Approximately 70% of older adults do not meet physical activity (PA) guidelines. While many interventions, are used in promoting PA, few target older adults or include substantial behavioural change techniques. Setting PA goals is often used but there is less research on goal setting outcomes, like improving health, preventing age effects, improving flexibility, goals that have been associated with increased likelihood of maintenance of PA. To understand the concept more fully in this cohort, the aim of this study was to identify older adults’ goal setting outcomes - the purpose of engaging in a PA app and through analysis determine the motivation characteristics of these. A cross-sectional, qualitative online survey was completed by 24, 60+, community dwelling, mostly active, French and Irish older adults. Thematic template analysis was used, and the motivation of these outcomes was assessed using the Self-Determination Theory of Motivation. The themes were: improving/staying healthy or physically active, maintaining functional aspects of physical health, continuing to do the things I want, sustaining mental wellbeing, and preventing disease and aging. Individuals cited goal setting outcomes that were generic, specific or both, and goals related to maintenance of PA and prevention of aging decline, were cited most. The motivation characteristics of these goals in mostly active older adults were autonomous and internally driven. Interventions, including apps, for older adults that encourage them to set specific goal setting outcomes/purposes for PA, are likely to generate stronger internally driven motivation, enhance ownership and participation, and may therefore increase effectiveness.