In a 2016 review, there were more than 165,000 mHealth apps available to patients on the market.1 A review published just 3 years later noted the availability of 259,000 mHealth…

(This is part 1 of a 3-part series discussing mHealth apps. Parts 2 and 3 will be posted shortly—Ed.) In the United States, 21% of adults (52.9 million) are estimated…