Amazing

Very, very good app. Ive been using it for the past three years and it has served me very well, you would be hard pressed to find another CAS/graphing app for the iPhone. This app by far outshines any graphing calculator Ive ever used, and, although it does require some time put in to use effectively, the shear breadth of operations and features is astounding.

Johnathan_Green about Mathematics with PocketCAS Pro, v3.6.1