Using e-Technologies to Maximize Physical Activity After Cancer Treatment

Inclusion Criteria: * 18 to 85 years of age * Diagnosed with stage I-III cancer * Completed all primary cancer treatments (e.g., surgery, radiation, chemotherapy) at least 6 months prior to enrollment. Adjuvant endocrine therapy, CDK4/6 inhibitors, PARP inhibitors, immunotherapy, and bisphosphonates are allowed within 6 months of study enrolment and during study participation. * Own a smartphone with data plan or access to WiFi (Apple or Android) * Medical clearance provided or no medical clearance needed based on exercise preparticipation screening. Exclusion Criteria: * consistently engage in \>300 min/week of moderate-intensity physical activity or 150 min/week of vigorous-intensity physical activity in the past 3 months * receiving or scheduled to receive surgery or radiation during study participation * have stage IV metastatic cancer or evidence of cancer recurrence * have multiple myeloma * have received bone marrow or hematopoietic stem cell transplant within past year * are unable to walk without support or have severe weakness or balance problems that limit safe participation in exercise * contraindications to participate in unsupervised exercise * are pregnant * unable to read, speak and understand English