RPN Calculator 48

In 1988 I bought an hp32s and I have used it throughout my career as a physicist. It never got “borrowed” (well when it did it was given back very fast!) and it has done some serious and lots of trivial calculations. However, being so wedded yo RPN means that I have problems with normal calculators. This app feels so comfortable for an RPN user.

Ok it’s not a full HP48, but has all the basic functions of a scientific calculator, in an RPN working mode with a large visible stack and nice HP colours. Excellent UI polish. It’s my favourite iOS calculator (I’ve only been using RPN calculators for 35 years) now that m48 is no longer available. Well worth buying the app. Well done to the author. Disclaimer: I still own a working original HP48 😀

This app is a perfect replacement/ alternative for HP calculators. I would ask for the text on the keys to be a bit larger for my small iPhone SE screen and failing eyes.

Best implementation close to the original HP

Bliss.

Very well designed, looks incredibly close to the 48G/GX with all the original functions (apart from programmable stuff and other functions I don’t remember and probably didn’t use -was so long ago-) Once you have used a Reverse Polish Notation calculator all others feel clunky and weird.

I've tried all the top RPN calculators, always return to RPN 48; it's never let me down. Due to my failing eyesight the app has the right key size so the right number of features for an iPhone 6 version of my 1995 HP48G. The only odd thing ever to happen: a 2 year old update notification on November 17, for iPhone 6/Plus screen size! :D