ThetaCalc

This calculator is an RPN calculator like the HP42S or DM42 but instead of RPL it uses Javascript for its programming model. This is seriously amazing! I have a bunch of other RPN calculators for iOS and this one blows them all out of the water in every way.

There’s no end to what you can do with this calculator! If you need a calculator to do something unique, you can probably get it done with ThetaCalc. I wanted to generate a specialized flightplan for an online flight simulator. No problem, ThetaCalc was up to the task. Then for maximum usability, I needed to generate the output as an XML file. Once again, no problem. It’s so sweet to have this programmability in the palm of your hand.