Well worth $5

Easy to use. I like the built-in conversions and the triangle solver is a nice touch, though it makes it so easy it feels like cheating :)

One minor issue that I hope is isolated is that in RAD mode, tan(pi) returns -1.22e-16 instead of 0.

Would like to be able to create custom units.

Still hoping for a replacement for my TI-89 (CAS, 3D graphing, Symbolic Calculus, programming, etc.). This isnt it, but I replaced several free calculators with this one and freed some home screen space. Considering the TI89 is around $150, I would expect to pay more than $5 for something with similar functionality. Something that reads TI Basic would be great so I dont have to re-write my programs.

mesae about allRPNCalc Calculator