Earlier this year, a report from digital health analyst Parks Associates found that 27 percent of people with a chronic condition want a mobile health device that tracks their health, but a significant percentage of those now using such devices say they’re too complicated or don’t work well.

"Nearly one-half of type I diabetics and one-third of type II diabetics are interested in health monitoring devices such as glucometers, but a steep learning curve and difficult or counterintuitive directions could inhibit their usage of these devices and also prevent them from buying other connected health devices," Harry Wang, the group’s senior director of research, said in a press release accompanying the report. "Device and application manufacturers would benefit from improving the ease-of-use of these devices." 

From the article "mHealth Looks to Solve the Diabetes Care Management Conundrum" by Eric Wicklund.