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Have you seen Free42, "...a re-implementation of the HP-42S Scientific Programmable Calculator and HP-82240 Printer?" [0] It is available for Android, iOS, Win
by jimbosis 5y ago
Have you seen Free42, "...a re-implementation of the HP-42S Scientific Programmable Calculator and HP-82240 Printer?" [0]
It is available for Android, iOS, Windows, macOS, and Linux. (At one point there was even a version available on Windows Phone 8.)
Perhaps it checks your boxes of good RPN calculator, available on all platforms. I don't know how much an HP-42S feels like a 41C.
In any event, thank you for ralc. I've off and on been searching for a nice web-based RPN calculator.
[0] https://thomasokken.com/free42/ https://thomasokken.com/free42/