What's your favorite advanced calculator? I've used Soo calculator for years (not the latest version though) and it's feeling a bit long of tooth, especially on a smaller screen like the TP has (previously used it on 4" iPaq PDA's).

I'd like something that's touch friendly, but doesn't scimp on the features.

I use 1calc. There are a few links around for the version you pay for; I assume it's just a modern version of this free version here:

1-Calc - Free software downloads and software reviews - CNET Download.com

But as it's just a calculator, how much could it really have been improved upon. BTW, I didn't try this link so it could just be for a trial version.

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Nothing is trivial, and nothing is important, it's all the same- only to save oneself from it as best one can. Only not to see it, that dreadful it!

I use Eval, which is free and has a slew of math functions and is free to boot.

Ray's RPN is excellent if you are an RPN person

I find that HP12C emulator on my Axim X51v does all I need.