I dunno, I took 8 semesters of math in college and never used a calculator in any of the classes. Didn't really use it on exams in other classes either - everyt

I dunno, I took 8 semesters of math in college and never used a calculator in any of the classes. Didn't really use it on exams in other classes either - everything was all variables. I did use it for homeworks. I'd be hard pressed to replace it with a iPhone app though, for one thing my calculator is a lot bigger and it is still pressed for space for buttons.