Top three calculators ?

[Johnh]

A nice old thread, and I see it was started with a question about our top three, in daily usage.

For me, a practising structural engineer, first would be my hp15CE, and since that's come out its superceded my hp35S. I still like that one, but its not quite as clear and direct and it's a bit more fiddly for daily crunching. I have just a handful of very simple programs on the '15. The '35s is much easier for more complex programs, but these days anything more than simple is better in a spreadsheet.

My number 2 is Panecal Plus on Android. This is a really great non-programmable, with ongoing editable record of the current calc at each step going back several pages until its cleared. Everything needed is easy to find and with a very clear font and buttons.

Equal second is an hp15c Android sim. I have Touch15, and it's a good alternative way to use a '15 eg in low light, or to develop programs, since unlike the real ones, memory can be saved and restored with multiple versions. Ive ported this program through several phones since buying it. These days it's TouchRPN and you get all the Voyagers for free with ads, and then you can pay for the ones wanted ad-free as needed.