WP 34s

Fast, accurate, powerful rpn calculator.

It is the best portrait-orientation RPN HP calculator on iPhone. It's fully free, no ads, no in-app purchase, full functionality, professional, various extend features and the most important, it can copy/paste to and from the other apps and its aspect ratio fits iPhone screen, 16:9, which look very nice. Recommend to all, who love non-graphic portrait-orientation RPN HP calculator, like I do. Five stars, indeed.

It would be great to round off this great looking and working WP 34s with a few features from similar emulated calculators (like Free42 and HP-12C): - Printing simulation into a separate screen and saving to image and “log” files - Shift Highlight: green and orange are somewhat similar (for some of us), so when a shift is activated, highlight the affected functions with higher intensity (brighter) color. Other potential improvements: - annunciators could be a little bigger - multi-line stack, registers or program views

I have the HP30B and a converted WP34S. The only issues with this update is that all the pick lists are darkened and are not readable, for example, key in h and X.FCN and you won’t be able to read the choices.

Great HP clone calculator. No issues at all and on top of that the great ol' classic look.

Excellent engineering calculator, however there is a terrible battery drain and device heating issue when the app is running. Otherwise, this would easily be a five-star app.

Excellent, powerful RPN calculator.

I downloaded both this one and the companion wp-31s, both are extremely well done. Just a FYI, the "show" command works differently in the two apps. I assume that the wp-31s behavior is correct and this app has a problem. Great apps other than that.

an emulated version of the WP34s calculator. This was written by folks who used HP calculators in their field, so they know what's up. It's full featured, including scientific function, calculus, matrix, complex, and computer maths functions, and it's RPN. Seriously, give it a go! If you like RPN calculators you'd do yourself a disservice by passing this one up. I have the actual calculator and I love it. Extremely useful at university! Even better now that I can run it on my mobile!

Wow... This is a RPN aficionado's calculator. Has most all the functions you commonly need and works great. For fun I timed how long it takes my wife, a math major, to do complex calculations with std calc vs me using the rpn. I can consistently do the number crunching in 50% less time and with more accuracy. Interestingly, she could reduce her time by ~40% even after just learning how to use an rpn.