I have been hesitant to share technology that does the Math for you. So is technology good for learning or not?  This new iphone app is based on Wolfram Alpha and was highly promoted in print media including full page ads in the New York Times.  According to Inside Higher Ed, "Many students taking calculus in college have already taken calculus in high school, but this does not guarantee they will pass the college-level course. In fact, Bressoud argues that studying calculus in high school can be detrimental, as students don't spend enough time building foundational knowledge."  I partly agree with Bressoud but wonder if high school Calculus exposes students to high level content that later helps them.  In in either case Aida and similar tools are promoting cheating while removing the cognitive load that Math usually demands.  My best recommendation for teachers is to have students do as much classwork as possible.