I am in college and instead of buying a real expensive calculator, I figured there would be great apps for way less money. I have one calculator app, it's called 180 in 1 math app and it works fine. It's just missing a lot more math stuff. The calculator needs to know, order of operations with fractions, comparisons. I know this is easy to do but I don't really want to spend time in math class when I have finales in my other classes coming up. If someone finds a good one for me, I will gift them a $0.99 app of there choice. THIS IS NO CONTEST, I JUST NEED A REALLY GOOD CALCULATOR. Thanks, tso5818