Inclusion Criteria:  ≥ 18 years T2D diagnosis for ≥ 12 months Residence in Region North Denmark or Region Zealand In treatment with insulin Being able to use a smartphone along with the other devices to be used in the trial Able to understand and read Danish.  Exclusion Criteria:  Pregnancy or breastfeeding, Major surgery planned during the trial period Participation in other trials Terms that, in the opinion of the investigator or subinvestigators, render the participant unfit to conduct the trial, including lack of understanding of the trial or lack of physical or cognitive ability to participate