Good Grapher Pro - scientific graphing calculator

This is a great (graphing) calculator app. It can do several different types of graphs, even implicit ones (like x^2 + y^2 = 1). The free version is also good, it's exactly like the paid version except it can't do all the graph types. It also has a built-in, full-featured calculator, which evaluates entire expressions (can't live without it!). It's not as powerful as some, but overall, it's a great app. Worth every penny.

This application has helped with numerous homework assignments and has always provided the needed help!

This is my go to calculator

This app is my go to calculator for doing any calculations more complex than simple two number operations. Being able to group operations with parentheses, replay calculations, and edit them is super useful.

This is a very nice calculator that does what it says, beautifully. The 3d function plots are just drop dead gorgeous and the scaling works very well. It would be nice to see a little more support for linear systems, like determinants for example.