Inclusion Criteria:  Diagnosed with any type of cancer (except breast cancer) Undergoing or starting chemotherapy with or without surgery Age ≥ 18 years Access to the online application via computer or smartphone Able to comply with the study protocol Able to sign written informed consent in the digital AWELL platform Provide a signed informed consent  Exclusion Criteria:  Diagnosed with breast cancer and undergoing chemotherapy (patients are already included in the healthcare path breast at Jessa Hospital) Undergoing other therapies (e.g. immunotherapy, radiotherapy, targeted therapy, hormonal therapy) Insufficient understanding of the Dutch language Severe cognitive impairment