When Kevin McCoy finished college, like many recent grads, he needed to lose weight. Smartphones didn’t yet exist, let alone apps that track weight-loss goals. So McCoy shed pounds the old fashioned way: diet and exercise. Years later, when a friend told him he was developing a weight loss program called Lose It!, McCoy saw the opportunity to make the process easier for others. “I thought, this is exactly what I believe in,” he says from his home in Marblehead. McCoy now serves as the senior vice president of business development for Lose It!, which has been downloaded more than 13 million times for smartphones since its first version was released in 2008. Last year, the company partnered with Boston.com’s health section and the YMCA for its “Hometown Wellness Showdown.” As 2013 begins, McCoy told us how his company is trying to make sticking with your resolutions easier.