You know what sucks, but is also really necessary? Math. All those numbers and letters jumbled up with a bunch of slashes, staring at you from some book, in a class you don’t want to take anyway. Why hasn’t someone invented tech that can do it for you?! Wait, no, they have. PhotoMath is an awesome new app that lets you hover your phone over a math problem, with the answer popping up right before your eyes. It’ll even give you step-by-step solutions!