No, we are not talking about the calendar on your phone. Let’s be honest, that alone usually doesn’t work as well as we hope. But don’t’ worry, Timeful, an iPhone app that acts as your personal assistant is the talk of the corporate world these days. Its algorithm’s artificial intelligence works along with your calendar to increase productivity by analyzing your tasks and meetings and estimating how long it will take you complete a certain assignment and it even goes as far as letting you know at what time of the day you are the most productive; Timeful.com.