38 reviews
Content rating
Screenshot image
Screenshot image

About this app

The idea is to take the strengths of the HP48 calculator, and try to get the same capabilities but with a touch screen Android device instead. It is a little limited at the moment. Implemented features:
* arbitrary precision float (gmp/mpfr/mpc)
* good support for units
* RPN calculator
* basic scalar operations (sin/exp/etc)
* programmability (if you like FORTH or RPL)

Future features:
* vector/matrix math
* graphing
* base conversions

This is (hopefully) under heavy development so if you use it, let me know what you think. Also, let me know if you want access to my source repository.
Updated on
Dec 16, 2013

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
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No data collected
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Ratings and reviews

36 reviews
Rolando Chicas
August 28, 2021
Very useful with many good features.
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A Google user
June 2, 2012
this program shows easy to use buttons, it doesn't try to draw an old calculator in you screen, if I need an old calculator i will take it out of my desk drawer. this calculator has a very good units interface i will let you multiply 3 different units (m) (in) (ft) and obtain m3. Like an hp 48 49 or 50. I was wondering why nobody takes the hp 48 or 49 rom and makes a proper emulator for andorid. Stop trying to invent new software just apply what works on the new platform. so far this is the best unit conversion and calculator combination you will find. I you need an excellent plain calculator use RealCalc. I you need to use units use this one. I also like the behavior of the sack on this one better than realcalc.
3 people found this review helpful
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A Google user
July 24, 2012
Always wanted a basic RPN calculator with a stack that's viewable/accessible. This one satisfies the viewable but I wish there was a straight forward was to get to a number deeper in the stack. Otherwise the 1/x right there is nice. I use it for basic math.
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What's new

2013/11/25 Version 0.10: Fix crash in landscape mode.

2013/11/24 Version 0.09: Fix backspace/focus issues with Google Keyboard (IME). Shorten displayed variable names when clever. Long click on variable for value.