The Texas Instruments TI-30X IIS 2-Line Scientific Calculator is perfect because

- It is
*scientific*so it does just about everything you would ever want in addition to the basics so it includes- A 2-line display
- Statistics on one and two variables
- Degrees, radians and grads
- Scientific and engineering notation
- Fractions
- Conversion
- Copy and paste with multiple storage cells

- It is little
- It has a sliding protective computer
- It works both off battery and solar energy
- It less than a new air filter

You can buy a science and math friendly calculator that costs next to nothing, can take anywhere without worrying about powering *or* dropping it, to easily work on just about any *real word* calculation that you find yourself doing every day.

This calculator rocks!

But no RPN, right?

No. Only HP calculators have RPN, right?

Did I mention that it works on solar and battery?! š

Yeah, I think you’re right.

I’ll be sticking with Android RpnCalc for now. Though I do love the idea of stand alone calculators…

Did I mention that it even comes with a slide-out case just like its big brothers?

RpncCalc sounds better.

If you did your math in Forth or a Scheme REPL then you would earn some kind of credits for that.

Thanks to your post, I did a fresh search for RPN Calculators on Google Play.

Here’s a very clean option: https://play.google.com/store/apps/details?id=com.anaoum.calculator – no ads, no scientific functions, just stack based math.

And here’s a comprehensive clone of the HP-42S: https://play.google.com/store/apps/details?id=com.thomasokken.free42 – again, no ads, high quality stuff.

Thanks for the inspiration.

You are welcome and thanks for sharing what you found. Cool!