Needs update!

Wow. This app looks pretty awesome, but after using it for a short while it has become apparent that it is not working as advertised. I assume its because I am running the new iOS 6. Specifically, once entering a f(x) I am not offered that possibility again when tapping the + . Also, when trying to delete one function, the program deletes all of them and then seems to crash. Choosing "app support" takes me to a sign up for Facebook page. I am not signing up to Facebook and thus this review.
Please update the app, as it has Soooo much potential for being awesome.

River2Horses about Graphicus - Graphing Calculator, v1.2.1