The HeartHab study is a pilot trial in which coronary artery disease patients (n = 15-30) are given the HeartHab application. The HeartHab application is a smarthphone based mobile application that serves as a secondary prevention tool, to support cardiac patients after their phase II cardiac rehabilitation program. During study period (4-6 weeks), participating patients will be asked to use the application. HeartHab includes a module devoted to therapy compliance, one to exercise training prescription and one to risk factor control. HeartHab aims to motivate the patient to improve his/her self-management skills and hence decrease cardiovascular morbidity (and mortality).

Motivational aspects and usability data will be collected during study period by means of app logs and/or questionnaires/interviews.

Inclusion Criteria:

• Patients with coronary artery disease for which they received a percutaneous coronary intervention, coronary artery bypass grafting or drugs only.
• Patients that have completed the standard cardiac rehabilitation program
• Patients who have access to a computer and a WiFi internet connection
• Patients that are able to go to the rehabilitation centre ReGo of Jessa Hospital
• Patients who signed the informed consent document

Exclusion Criteria:

• Patients with a history of VF, sustained VT and/or supraventricular tachycardia during the last 6 months before enrollment.
• Patients who due to cognitive, neurological and/or musculoskeletal constraints are unable to ride a bicycle.
• Patients with a pacemaker or defibrillator.
• Non-Dutch speaking patients
• Patients who simultaneously participate in another study