Utter failure.

Giving this app one star is very generous. This calc is so freaking confusing I cant even figure out how to even add numbers. It keeps giving me BS errors. Sure it has directions but I cant even access those! I click on them and it does nothing. Im in calculus right now and i understand that better than this crap. This failure of an app is worthless. FOR GOD SAKE! LEAVE THIS APP AND NEVER RETURN!!

K_rent about ND0 RPN Graphing Calculator