Spare change can get pretty annoying. If you’re like a lot of people, you’ll let it pile up in your pocket until one day you unload it all on some poor convenience store clerk to pay for a six-pack of beer and a bag of chips. However, a soon-to-be-released smartphone app called Acorns has come up with a solution to this problem: It will let you automatically invest any spare change you have into a diversified portfolio. In a Mashable article on the app published a couple of months ago, Acorns cofounder Jeff Cruttenden explains how the app “simulates” producing spare change from credit card purchases by rounding your total up to the nearest dollar and investing the leftover amount into