This is a great calculator for algebra and trigonometry level math. I give it four stars because the main trigonometric functions are displayed twice (to the left and right of the basic calculator). I think that space would be better used by some of the calculus functions. I know the Math Studio app has those, but I believe they could have included at least some of the basic ones in this app as well.
I tried contacting Pomegranate apps regarding this suggestion but the email address given on their website doesnt exist.
Acoustic Chris about Solve - Graphing Calculator, v5.0.1