Palm Basic 1.0
the author of this app says:
This application allows you to write programs on your Palm for your Palm. It provides a program management screen and a console mode, allowing you to run your programs. It supports integer, floating point, string variables, and single and multi-dimensional arrays.
Common structures found in BASIC are supported. It contains built-in procedures for formatted printing and input, basic graphic operations and a set of floating point math functions.