Just what was needed l last used a graphing calculator 20 years ago - and I thought they were worthless. This is awesome: So simple to use, so powerful, and the developer obviously has a sense of humor. Becoming a fave app.
Okay I will admit that I was gonna go with the free one til I read the pi joke! Great app none the less.
If you're a scientist or engineer you definitely should get this app.
Great app, downloaded it thinking it was something else though.
Great dev and app, really responsive.