The number of patients with breast cancer is on the rise, which leads to an increasing number of patients in need of follow-up and support for recovery from treatments. The disease will recur in one out of five patients. With the exception of imaging of the breasts carried out at intervals of 1 to 2 years, frequent appointments or imaging have not been shown to be beneficial for the prognosis. Follow-up care of breast cancer is well suited to be carried out by the nursing staff. The status of mobile applications developed for patient monitoring as part of the surveillance is becoming more clear.