Mika accompanies patients during and after cancer therapy. Monitoring symptoms, mindfulness and movement exercises, answers to difficult questions - Mika helps to better cope with the mental and physical consequences of the disease. Mika is the first oncology app to be approved by the German Federal Institute for Drugs and Medical Devices (BfArM) as a digital health app for all types of cancer. Mika is being developed in close collaboration with leading oncologists, psychooncologists and cancer researchers at Charité, Leipzig University Hospital and NCT Heidelberg.