The use of Tele-Health interventions (THI) have the potential to educate and engage patients with T2D in self-management in the long-term and the evidence suggests that THI could be effective and feasible in improving clinical outcomes in diabetes care (14,15,22,23). The widespread and increasing use of smartphone applications is opening new ways to improve health and health care delivery. It might be ideal to use THI to increase physical activity and hereby target a large part of the population by simple and inexpensive means. The smartphone has been used as a tool among others to register exercise, diet, weight and plasma glucose levels, but the evidence of using a smartphone as an exercise device is lacking (24).