The "second function" (f-key) is now also activated by a longer touch. An excellent calculator, now even better!
Love it For a reverse polish old timer, horizontally just like my old hp10c and goes with me everywhere now on my s4.
Great Calculator This calculator reminds me of my old HP-45. It gives me a sense of familiarity and comfort. Once you get used to RPN you will never want to go back!
Perfect now Brings back memories of engineering school
This app is excellent and it is the best RPN calc in android world. It is very handy and intuitive to use on smart phones, which don't require programming for daily use. I love big keys, display of 4 stacks, its intuition and I love its conservation (like EEX or CHS key). Nevertheless, HYP, matrix and integration are missing. (Integration requires programming, anyway.) And it would look very nice and much more professional, if g function key were also provided. Adding g key should sacrifice key size only a little.
Version 2.30 fixes an issue with menus on tablets
With Version 2.29, touching the numeric display area will bring up the menu. Long touches bring up a copy/paste menu.