Agreed. I have had many arguments with people concerning physical calculators and calculator apps. But despite what people say, they actually use apps when on t

Agreed. I have had many arguments with people concerning physical calculators and calculator apps. But despite what people say, they actually use apps when on the move. They may have a real calculator on their desk (i do too), but the truth is they don't want yet another gadget in their pockets to worry about. These small RPN calculators are neat, but they fall between two goals. For a physical calculator they're a bit too small and fiddly to use. I certainly wouldn't want to program on the actual devices [although i really would like to be able to transfer programs in/out from a PC]. The size of the originals was about right - nice to handle and also pocket sized. The other goal is portability, but in this respect they are _still_ another thing to carry. and it's not that clear whether a tiny keyboard is actually better than a large smartphone screen. here's a plug for a calc app i wrote (sorry not RPN). It's totally free with no annoying adds (so i feel ok posting it here). https://play.google.com/store/apps/details?id=com.voidware.retrofree https://play.google.com/store/apps/details?id=com.voidware.r...