TSK-Pad is a cross between a calculator and a notebook.
It draws inspiration from data science notebooks (eg Jupyter) without claiming to provide the same functionality.
TSK-Pad accept only simple mathematical expressions and, except for the definition of custom functions, does not allow script programming.

The main functions available are:
- creation of a worksheet
- inserting expressions, functions and text in the worksheet
- definition of new functions
- editing in text mode
- automatic recalculation of the worksheet based on changes to variables
- - support of trigonometric functions
- simplification of expressions and differential calculus
- calculation with imaginary numbers
- automatic conversion between measurement units