STEPWISE Parkinson: A Smartphone Based Exercise Solution for Patients With Parkinson's Disease

All participants will be given access to an application installed on the participants' own smartphone: the STEPWISE app. The STEPWISE app will encourage participants to increase their long-term physical activity (1 year). Different treatment arms will receive different physical activity goals. Participants will get feedback and support via the smartphone app, that stimulates them to reach their individual physical activity goal (i.e. target percentage increase in stepcount).