Mobile health application and Fitbit + standard of care: Participants will utilize mobile app and Fitbit and standard of care. Mobility data will be generated using a mobile health tracker designed for smartphone devices.

Participants will receive standard of care

Mobility data will be generated using a mobile health tracker designed for smartphone devices, which allows the phone to automatically and passively (no patient input needed) capture information on the patient's activity; i.e. if the person is walking, remaining stationary, or moving at a rapid speed (eg. in a car). The app will prompt patients once daily to answer a series of questions that will collect patient reported symptoms and health status data. Physicians will be alerted to abnormal values within 24-48 hours and patients will be triggered to call their physicians immediately if the values are outside of normal parameters.

Investigators will track readmission rates after surgery for those on the trial

Investigators will track patients' healthcare resource utilization and the cost of this utilization by assessing how often the patients contact their providers via phone or the app, access the emergency room, and through readmission data.