RecruitingBehavioural interventionPhysical Activity Intervention Among Older Women With Gynecologic Cancers (Fit4Treatment)The primary purpose of the study is to determine which of four components (symptom-burden tailored app, exercise partner, oncology provider engagement, coaching) added to a core intervention of a wearable activity tracker and commercially available app, will improve physical activity. The findings will generate meaningful knowledge about how to best increase physical activity in older gynecologic cancer patients receiving systemic cancer therapies to improve quality of life and cancer-specific survival.