Inclusion Criteria:  Patients with metastatic renal cell carcinoma Age ≥ 18 years Starting 1st or 2nd line treatment at enrolment Performance status (PS) ≤ 2 Able to read Danish No serious cognitive impairment Patient has given written informed consent  Exclusion Criteria:  No smart phone Patient participating in other interventional studies. This is only relevant for studies that might interfere with the intervention. Cases of doubt will be settled by the protocol committee. Persons deprived of liberty or under guardianship or curators Dementia, mental alteration or psychiatric disease that can compromise informed consent from the patient and / or adherence to the protocol and the monitoring of the trial Earlier participation in PRORECECA (e.g. when changing from 1st to 2nd line of treatment)