- Intervention-group: In addition to usal care, patients in the intervention-group will get access to the application Vett®, as well as approximately one hour of training on how to use it and register personal goals together with study-coordinator. They will for a period of approximately twelve months have access to Vett® as well as personal follow-up through the app by a specialized physiotherapist. Vett® is an app developed by professor Kari Jorunn Kværner, doctor and specialist in cognitive training, guidance and counseling. Patients will be encouraged to set a minimum of two goals with associated tasks for the follow-up periode. Tasks will be the basis for reminders which the Application gives the patient. The patient decide when and how often reminders should come. The goals and tasks will be set according to the needs of each patient (individualized). The follow-up is individualized and dynamic and targets the patient under evaluation directly. Vett® makes it possible to create and set individual goals (e.g. exercise or eating fish) with tasks and reminders, weekly evaluation of the individual goals and ask questions to the supervisor. The application also gives the opportunity to receive tailored and motivational feedback from the supervisor. The supervisor has access to an administrator interface where it is possible to monitor what the patients are registering in relation to their personal goals and tasks, as well as sending tailored and motivational feedback. In this study, the patients will receive tailored feedback based on their achievements on personal goals and tasks through e-mail. They will receive feedback every week for the first Three months, then they will receive feedback as often as they want based on the conversation when included to the study. They will also receive 1-3 motivational feedbacks/notifications every week. Any questions to the supervisor will be answered by two working days. In the event of receiving health related questions (e.g changing of medication or chest pain) the patients will be advised to contact their general practitioner (GP). One year after CR patients will be called for a check-up, including questionnaires and a cardiorespiratory Fitness test.