From January 2015 to June 2016 all patient's with T2D, who are referred to the promotion centres in the municipality, will be offered to participate in the study. In total 513 patients with T2D from different municipalities in Denmark will be included and randomly allocated into three groups. One group will receive standard care and the two other groups will do IWT with the InterWalk app. All three groups are followed by the promotion centre for 8-14 weeks (according to the rehabilitation in the municipality) and hereafter only one of the IWT groups will receive motivational support up to 52 weeks.