Smartphones have become a necessity in everyday life, imagine what we did before we had maps accessible on our phone? On average, Americans spend approximately 4.5 hours a day engrossed on their smart phone. That’s about 23 days a year! If you find yourself on your phone a large majority of the time (and lets be honest, many of us do find ourselves on the phone) you may want to consider turning it into a money making venture. Here are 15 great smartphone apps that you can use to make money, and it’s just as easy as getting on the phone!