Today, half of the entire U.S. population uses smartphones. As a nation, we are addicted to our devices and our apps. In fact, according to Mary Meeker’s latest report, most smartphone users now check their phones 150 times a day! So it’s no wonder that marketers are waking up to the fact that apps present an incredible canvas for marketing and engaging with consumers. In fact, in 2012, more than $1 billion was spent on mobile marketing, and that number is expected to double in 2013 and continue to grow in the years to come.