Abstract: A device for proposing an insulin dosage for a diabetes patient, wherein the device comprises an input interface configured for receiving patient glucose level data indicative of glucose level information of the patient, a processor configured for determining the insulin dosage in an interactive time-dependent manner based on applying the received patient glucose level data to at least only predefined insulin dosage determining criterion, and an output interface configured for outputting a result of the determining as a proposal for the insulin dosage indicative of doses and assigned times of the day according to which insulin is to be administered to the diabetes patient.