GO-25 SciRPN for Android

I’m very impressed with this program. With the latest update I’m starting to like this app as much as the original calculator. If only the keyboard was the same...

This is a wonderful simulation and has become the go-to calculator on both my Android and Mobile. If I had found it years ago I might have saved myself a fair bit of money and time spent on other calculator apps. If you like to use RPN calculators and keystroke programming, this one deserves your attention. Pros - it’s a calculator first and foremost. There is no CAS or graphing to bloat the app. The stack and program listing windows make keeping track of things very easy. It looks good and the settings are straightforward and useful (thank you for allowing the option to mute the key sounds). Cons - none so far.

I've used the SciRPN-25 for about 3 months. The calculator emulates the original HP25c accurately, but with more programmable steps. The panel showing the stack and register content make the calculator easier to use compared to the original. No bugs detected yet. The SciRPN-25 replaced my buggy HP-11c emulator. I've written my own programs including: combinations, permutations, amortization, and linear regression. Highly recommended for those who want to replace their aging or non-working Woodstock class HP calculators: 25, 25c, or 29c. In summary, I love this calculator.

Accurate and beautiful recreation of best calculator HP ever made. Had a 25 and 29c in engin school, loved it. Still have my 43-year-old 29c but battery drains too fast to be usable. This app provides the look, feel and calculation ease of the original. Much better than the junk HP is selling these days. Thanks for taking the time and care to do it right.

Couldn't be better except limiting memory and speed to the original specs for added nostalgic effect.