PhotoMath is not your normal calculator app, and it’s one that might soon be banned at schools worldwide. Just point your smartphone’s camera towards a mathematical equation and PhotoMath instantly solves it for you. Plus, it shows each step used to arrive at the answer. Best of all, it’s an entirely free app. The current version supports basic arithmetics, fractions, decimal numbers, linear equations and several functions like logarithms. Download page. Continue reading to see it in-action and read about the one caveat:

As cool as this may sound, there’s still one caveat, especially if your teacher loves to use handwritten tests: “Handwritten text is not supported, only printed problems from Math textbooks.” Fortunately, this functionality may be added later on, but will still be troublesome since everyone’s handwriting is different.