JRPN 16C

Jovial Software

About this app

Programmer's calculator that simulates an HP 16C. It simulates the appearance and behavior of the original, including the seven-segment display, and the little blink you get when entering numbers. The 16C's windowing functions are implemented, but can be disabled to allow the display of longer numbers at one time.

Full source is available on Github. There is no advertising of any kind -- this is a hobby project, and a bit of a labor of love.

Do be aware that the 16C is a calculator intended for computer programmers. If you're not familiar with hexadecimal or stack-based RPN calculators, this probably isn't what you're looking for!

Ratings and reviews

Reviewed moments after download. I have one of these for real bit the screen died unfortunately. This works just as well with the asthetic I like. The cherry on top is the inclusion of the back panel. Absolutely perfect. Thank you for keeping this tech history alive and making a very functional app.

This is a fantastic simulation of the HP-16C! I have one of the originals, but why wear it out when I can use this? It also allows me to use it at work where I'd be reluctant to bring the real thing. Great job!!!

Having RPN on my phone is awesome! I no longer need to carry my HP-RPN and just leave it on my desk where it is much safer from being lost or stolen. Gremlins may be another issue as I'm still looking for lost socks...

What's new

Allow user-configurable extra memory: Issue 95
Make haptic feedback the more iOS-friendly selection feedback
Don't reset G flag when entering number: Issue 98
Fix WINDOW in program: Issue 94
Cosmetic fixes: Issues 93, 92
Run conditional operations ouside program: Issue 97