This app is a port from a program that shipped with the Mac back in the PowerPC days. It was the coolest math program ever back then, and it still is. It is great to have it available on iOS. It is worth many times the price.This app helps math students at all levels visualize functions and graphs in very enlightening ways. We use it frequently in many math classes at the college where I teach. It's capabilities cover every level of math from beginning algebra to multidimensional calculus, complex numbers, and four dimensions, and everything in between. I wish this app had been available when I was a student. The user interface is a model of simple, elegant, and friendly design. It is also beautiful and fun.There are lots of math graphing apps now, but none is both as powerful and easy to use as this one.

Of all the graphing calculators I have used, Pacific Tech's Graphing Calculator is the best because, unlike the others, the user interface does not get in the way of actually doing the math. By comparison, other apps have clumsy user interfaces that get in the way — resulting in frustration, wasted time, and distracting away from the mathematics of interest. Whereas this app's user interface gets out of your way, so you can focus on the math without having to battle the program! Thank you for bringing this to the iOS!

Awesome graphing calculator app! Version 1.3 exists on my old PowerPC macs running OS9 and I used it a lot for math / CS classes on my iBook G3 (I miss that machine). Glad it's now been updated and better than ever. The developer was quick to reply about my inquiry. Highly recommended!P.S. Since upgrading to iOS 11, I noticed that the app keeps crashing now, especially if I try to rotate or zoom in on 3D graphs. Any plans on fixing the bug? I really like this app. Hope it gets fixed.

I am delighted to see Pacific Tech's venerable graphing calculator finally make its way to iOS. It's a wonderful tool for visualizing and building intuition about mathematics.I'm very impressed so far (only been playing a few hours so far) with the iOS version so far, particularly the interface. Which feels natural-perhaps even easier to pick up than the OSX predecessor.