RpnCalc

RpnCalc


RpnCalc is the best and most popular RPN calculator on the Android Market.

It has an interface that users of the HP calculator line will be completely at home with, including these features:
Scientific mode
Basic (large key) mode
20 Memories
Key click (haptic feedback)
Continouous memory
16-level stack
Front four stack elements displayed
Memories are not sacrificed to make room for program steps
RpnCalc has a sixteen-level stack to hold more data. The front four elements on the stack are visible at all times, making it much easier to keep track of where you are in your calculations.

See http://www.efalk.org/RpnCalc/ for manual

Oh, and here's the privacy policy: RpnCalc never collects any private data of any sort. It never connects to the internet. It doesn't even run ads.

Recent changes:
Version 2.19 Fixed bug when user enters too many digits

Version 2.21 changes the way the app remembers keyboard layout. There should be no visible change, but it will prevent bugs in the future when layouts change.

Version 2.20 died with a "class not found" error. Probably a compilation problem. Users who installed 2.20 should immediately install 2.21
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Free
88
4.4
User ratings
29074
Installs
100,000+
Concerns
0
File size
146 kb
Screenshots
Screenshot of RpnCalc Screenshot of RpnCalc Screenshot of RpnCalc Screenshot of RpnCalc Screenshot of RpnCalc

About RpnCalc
RpnCalc is the best and most popular RPN calculator on the Android Market.

It has an interface that users of the HP calculator line will be completely at home with, including these features:
Scientific mode
Basic (large key) mode
20 Memories
Key click (haptic feedback)
Continouous memory
16-level stack
Front four stack elements displayed
Memories are not sacrificed to make room for program steps
RpnCalc has a sixteen-level stack to hold more data. The front four elements on the stack are visible at all times, making it much easier to keep track of where you are in your calculations.

See http://www.efalk.org/RpnCalc/ for manual

Oh, and here's the privacy policy: RpnCalc never collects any private data of any sort. It never connects to the internet. It doesn't even run ads.

Recent changes:
Version 2.19 Fixed bug when user enters too many digits

Version 2.21 changes the way the app remembers keyboard layout. There should be no visible change, but it will prevent bugs in the future when layouts change.

Version 2.20 died with a "class not found" error. Probably a compilation problem. Users who installed 2.20 should immediately install 2.21

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User reviews of RpnCalc
Wonderful app, lets me leave my previous 15c at home!
Oct 8, 2011
Fantastic app. Nearly as good as an HP calc. I love it. Andy
Jan 12, 2011
Awesome - love my HP15c and this is getting close :-)
Aug 25, 2010
Android Market Comments
A Google User
Jun 28, 2014
Clean, no permissions needed Get this calculator
A Google User
Jun 26, 2014
I might finally let my old HP 11C go. It's beautiful!
A Google User
Jun 22, 2014
Very nice. The % operation works even better than on the original HP calculators.
A Google User
May 25, 2014
Not bad Should adopt "long press to activate shift-function" like some competitors do. STO and RCL should list out memory registers.
A Google User
May 12, 2014
The best calculator from many I've tried Very professionally made with a familiar interface and the glories of reverse Polish notation. The only thing I miss is a programming language. But it's a free app so 5 stars out of 5.