The $15 HP 12c and $20 HP 12c Platinum provide the same business-focused functions and formulas as the hardware models, and the $30 HP 15c includes all of the original's scientific algorithms and calculation sequences, including matrix, root, and complex-number functions - zsafwan  from Bookmarklet

I have an 11c that I used all through high school. I treasured that thing. Sadly, it's dead now. - Bill Scherer

I really would like to see the 41C, just for fun. I so badly wanted to have one, but there was not the slightest chance that I could afford it. - Oliver Bouchard

there is a 41c app on itunes already - I'd like to see a later one like a 48 or 50, or that CE app they wrote ages ago that did awesome symbolic math - Paul

这个看起来很酷嘛 - bluesky

cool - Susan Beebe

I think I still have a 15C in a drawer somewhere. I'll have to root around for it and see if it still works after all these years. - Chris Johnson

A piece of software this advanced, and this costly, I'd expect it to have some kind of results retention/ formula memory across sessions, not merely replicate the functionality of its real-life parent (sibling?). But then what do I know of financial calculators anyway… - ianf ⌘

Paul: Thanks I'll definitely get that one. Some 50 times cheaper than the original. But then if you count the iPhone as well... - Oliver Bouchard