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A comment on “A calculator app? Anyone could make that”. Parent comment

Re:“A calculator app? Anyone could make that” by kqr on Sunday February 16, 2025 @10:47AM (#43068915)
If you're willing to learn to work with RPN calculators (which I think is a good idea), I can recommend RealCalc for Android. It has an RPN mode that is very economic in keypresses and it's clear the developers understand how touchscreens work and how that ties into the kind of work pocket calculators are useful for.

My only gripe with it is that it doesn't solve compounding return equations, but for that one can use an emulated HP-12c.

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Re:“A calculator app? Anyone could make that” by HachiWari8 on Sunday February 16, 2025 @03:23PM (#43071324)
RealCalc Plus is great on the Android side. If using iPhone/iPad/macOS, try BVCalc. Its RPN mode shows you the algebraic expression (i.e., using infix notation display) for each item on the stack, which both helps you check for entry mistakes and also more easily keep track of what each stack item represents. I haven't found another RPN calculator that can do this.
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Re:“A calculator app? Anyone could make that” by antod on Sunday February 16, 2025 @10:11PM (#43074652)
On Android, I just went straight to using an emulator of the HP42S that got me through engineering school in the early 90s. The muscle memory for the basics was still there, even if I can't remember how to use the advanced functions any more.

I still have my actual HP, but it seems to chew batteries now.

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