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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