Liberalism Is an Affinity for Things that Are New and Trendy
Google Documents Now Does Graphs!

iPhone Calculators

Hoisted from Comments: JRoth on iPhone Calculators:

Grasping Reality with Both Hands: Brad DeLong's Semi-Daily Journal: Hope you see this comment (or just find it on your own): It's a "graphing calculator;" no idea if it will meet your needs. I was a bit shocked myself that there's no option for a better calc built in to the iPhone - Macs had a nice scientific calculator built-in by about '92....

Oh, for cryin' out loud - here's a much better (looking) one: