PawCalc is a scientific calculator for PalmOS 2 and later. The main features are:

* Expression-based notation.
* Programmable.
* Built-in mathematical, physical, and chemical constants.
* Conversion between more than a hundred different units.
* Functions for trigonometry (with inverse and hyperbolic), logarithms, and exponentiation.
* Special functions like gamma, erf, and erfc.
* Statistical functions.
* Unlimited number of variables.
* Support for binary, octal, decimal, and hexadecimal numbers.

The manual including screenshots and programming examples are available online at http://www.paweng.com.