A delightful and essential reimagining of RPN
A miniature masterpiece, Calx rethinks the RPN or stack calculator from the ground up, making great use of the touch interface -- swipe left to reveal statistics, right to reveal the scientific functions, and you can swipe any point in the stack to delete that line and have the rest sink down like tetris blocks. Unlike other RPN calculator apps that seek to visually emulate the HP calculators of the 1970s and 80s that we all love, Calx is its own thing, a smooth and simple interface for crunching numbers. I use it on iPad where it stays well behaved and a suitable size (not expanding across the whole screen with huge buttons like Apple's IOS18 calculator). The only thing I could ask for is is to add split screen capability so one can calculate while looking at a source document where the numbers are rather than hopping back and forth ...
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Exactly what I was looking for.
I’ve been looking for a stack-based calculator like this for quite a while, resembling how RPL (not RPN) calculators like the HP48 used to work.
If you have never used a calculator like this, give
it a try. This type of calculator becomes so addictive that you’ll never want to use anything else.
If you have never used a calculator like this, give
it a try. This type of calculator becomes so addictive that you’ll never want to use anything else.
Fast and easy RPN calculator
The main advantage of RPN is speed and efficiency, and CALX makes RPN simple and intuitive to use. I was hesitant to spend money on a calculator considering how many free alternatives there are, but I’m glad I did. For simple calculations CALX is faster to use than my (physical) graphics calculators, and unlike RPN calculator apps that emulate old HP models there’s no archaic “X, Y, Z, T” stack behaviour to think about, either.
The swipe behaviour of CALX makes best use of the touch screen, and you can swipe the controls to show other functions (including super-handy statistical calculations), swipe on individual items in the stack to remove them, and swipe up to clear everything. Worth the few dollars it costs.
The swipe behaviour of CALX makes best use of the touch screen, and you can swipe the controls to show other functions (including super-handy statistical calculations), swipe on individual items in the stack to remove them, and swipe up to clear everything. Worth the few dollars it costs.
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Absolutely perfect
Takes a scary concept and makes it beautiful and simple. The only calculator I'll ever need. Wonderful job!
